- 132 - Pacific War - Landing against Biak, May 28 - June 4, 1944

The Pacific War - week by week

Last time we spoke about the Siege of Myitkyina. General Vinegar Joe made huge gains in northern Burma. Myitkyina’s airstrip was taken, now the main town was under siege. The Japanese resistance around Kamaing was greatly reduced. However setbacks were also seen, such as the Chindits abandonment of the Blackpool stronghold, prompting Stiwell to toss a new attack at Mogaung. Likewise American officers embedded with the Chinese units were sending reports of how the Chinese were suffering very heavy casualties and utilizing far too much ammunition for their objectives. Regardless, it seemed the Ledo Road to China was going to pan out. Calvert chose a new stronghold location, this time at Lakum, where his Chindits faced heavy resistance. Over on New Guinea, the allies were advancing west of their new beachheads to assault Lone Tree Hill. Soon assaults against Arare and Biak would also be made.

This episode is the Landing against Biak

Welcome to the Pacific War Podcast Week by Week, I am your dutiful host Craig Watson. But, before we start I want to also remind you this podcast is only made possible through the efforts of Kings and Generals over at Youtube. Perhaps you want to learn more about world war two? Kings and Generals have an assortment of episodes on world war two and much more so go give them a look over on Youtube. So please subscribe to Kings and Generals over at Youtube and to continue helping us produce this content please check out www.patreon.com/kingsandgenerals. If you are still hungry for some more history related content, over on my channel, the Pacific War Channel you can find a few videos all the way from the Opium Wars of the 1800’s until the end of the Pacific War in 1945.

In the last episode, plans were made for an amphibious assault against Biak, yet there were some hiccups. The Hurricane Task Force staged at Humboldt Bay, were facing issues with terrain. Terrain considerations forced most of the task force to assemble on the southern of the two sand spits dividing Humboldt and Jautefa Bays. On this spit the beach had a steep slope which made it impossible for more than a very few LST's to be held against the shore line long enough to load bulk stores. The LST's had to beach on the northern spit, where clearing and salvage after the fires and explosions which had ravaged that beach during the early phases of the Hollandia operation had not been completed. In addition, the northern spit was being used to unload supplies destined to be used at Hollandia, to load supplies being sent to the Tornado Task Force at Wakde-Sarmi, and to unload cargo for the Hurricane Task Force. No road connected the northern and southern sandspits. Consequently, most of the supplies and equipment, as well as many of the troops, had to be transported by water from the southern to the northern loading area. There were only a few LCT's available for this work and only by working twenty-four hours a day, were all the troops and supplies transported to the loading beach in time for departure on the 25th.

Finally, General Fuller’s task force would depart the bay on the evening of May 25th, covered by Admiral Fectheler’s cruisers and destroyers. Taking the most direct route, the convoy would be able to arrive off Biak on the morning of May 27th. At the time, Biak was held by the Biak Detachment, under Colonel Kuzume Naoyoki. It consisted of the 222nd Regiment; the 19th Guard Unit; and some rear echelon, service, and construction units. There were 10000 IJA personnel, 4000 were combat troops in total and 2000 IJN personnel, 125 were combat troops in total. In view of the intense enemy concentration on the Sorido-Mokmer airfield sector, Colonel Kuzume decided on May 22nd to shift the operational center of gravity of the detachment to the west. The 1st Battalion, 222nd Infantry, was relieved of its mission in the sector east of Opiaref and sent to replace the naval garrison unit in the Bosnek sector. The naval troops were, in turn, shifted westward into the Sorido airfield sector, while the tank company was brought over from Arfak Saba and assembled in the area northwest of Mokmer airfield. Although most of the Japanese efforts had been directed to the construction of airfields, Kuzume had ably managed to build a system of strong cave positions.

In this amphitheater-like terrain and along the low ridge, both of which were covered with thick growth, the Biak Detachment emplaced many field artillery and antiaircraft weapons. There were also many automatic weapons and a few mortars. All these weapons were located within range of Mokmer Drome and most of them could also fire on Borokoe Drome. The key to Colonel Kuzume's defenses in this area was the West Caves area, located about 50 yards north of the low ridge and about 1200 yards north of the western end of Mokmer Drome. The West Caves were actually three large sumps, or depressions in the ground, which were connected by underground tunnels and caverns. The caves were ringed with pillboxes, bunkers, and foxholes, and an extensive system of coral and log emplacements was built along the spur ridge above Mokmer Drome. Biak naval headquarters was originally located in the West Caves, which could shelter 1000 men, and Colonel Kuzume planned to move Biak Detachment headquarters to the caves for the final defense of the airdromes. As long as the West Caves and the positions along the low ridge were occupied by the Japanese, Allied planes could not safely use the airfields.

Chief of Staff of 2nd Area Army, Lieutenant-General Numata Takazo and Rear-Admiral Senda Sadatoshi, Commander of the 28th Special Base Force, with HQ at Manokwari had come to visit the garrison just as the Allies were preparing to invade, with Numata choosing to stay on the island to direct the battle alongside the resourceful Kuzume. Yet all of the Japanese at Biak were about to be caught with their pants down as many of their troops were scattered about the island. The Biak Detachment would not be in their defensive positions on Z Day but were apparently being held mobile. Detachment headquarters, the 1st Battalion of the 222nd Infantry about half of the 19th Naval Guard Unit, and miscellaneous service organizations were all located in a cave and garden area on the inland plateau about 3,000 yards north-northwest of Bosnek. Outposts at Saba and Opiaref were held by the 1st Company, 222nd Infantry, and a platoon of the 2nd Company was stationed along the main ridge behind Bosnek. The bulk of the 2nd Battalion, the rest of the naval guard unit, and some naval antiaircraft organizations were located at the East Caves. Naval headquarters, various naval service units, and the 6th Company, 222nd Infantry, were at the West Caves. Most of the army service units were at Mokmer Drome or disposed along the low ridge north of that field. The bulk of the 3rd Battalion was posted at the west end of the same airfield. One platoon of the 10th Company was at Sorido, guarding the southern terminus of a trail which led north across the island to Korim Bay. The tanks had not yet moved to Saba but were assembled on the terrace north of the eastern end of Mokmer Drome.

On the morning of May 27, Fechteler carried out his naval fire support as planned and General Kenney’s bombers also launched their air bombardment, receiving little answering fire from the surprised Japanese shore installations. Yet there was a westerly current off Biak that would push the transports over 3000 yards to the west, which would complicate the landings. A rocket-equipped LCI, which began firing on the beaches about H minus 4 minutes, led the first LVT wave toward the shore. The LCI fire, consisting of rockets and fire from automatic weapons, continued until H plus 2 minutes, when it was lifted because it began to endanger the troops who were unloading and pushing inland. The first waves of LVTs then formed rapidly and crossed the line of departure; but because of the westerly current and the smoke and dust raised by the preliminary bombardment, they would end up landing on a mangrove swamp almost 3000 yards west of Green Beach 4. Nevertheless, by 7:30, the 2nd Battalion, 186th Regiment had successfully landed and was pushing beyond the swamps to the main coastal road connecting Bosnek and the airfields. Five minutes later, Companies I and K of Colonel Newman’s 186th Regiment also landed about 700 yards east of the 2nd Battalion. Realizing about the westerly current, Fechteler then started to turn succeeding waves eastward to the proper beaches, with the troops coming ashore in disorder for the next thirty minutes.

With more than half of his regiment already far west of the proper landing beaches, and knowing that the landing had become disorganized and that the rest of the boat waves were being delayed, Colonel Newman asked the task force commander if the 186th Regiment should continue with its original mission or whether it might be feasible to switch missions with the 162nd Regiment and start moving west toward the airfields. General Fuller, the Task Force commander, ordered the 186th Regiment to continue with its original mission. As events turned out, it might have been better had the regiment continued west, and it is possible that a great deal of time might have been saved if the missions had been switched. In the first place, the maps with which the task force was supplied were so inaccurate that both regiments soon came upon terrain features that threw much planning out of gear. Secondly, most of the 186th Regiment had landed so far west that both it and the 162nd consumed much valuable time getting to their proper locations. Finally, an exchange of missions might have been executed without much difficulty, for, in amphibious training, the 41st Division had learned to switch missions when such mistakes were made.

Luckily, the landings would face no opposition, though the confusion would give Kuzume time to prepare his defense. By 8:00, the rest of Newman’s 3rd Battalion had landed to secure the jetties; and by 10:30, Companies I and K arrived to take their position west of Old Jetty. Entangled with the landed artillery and tanks, the 2nd Battalion would only be able to reach the area east of New Jetty by noon, then sending patrols to the north and east to secure the Bosnek perimeter. The face of the coral ridge behind Bosnek was found to be rough and honeycombed with small caves. Companies F and G, aided by elements of the Support Battery, 542nd Engineer Boat and Shore Regiment, sent patrols along the steep slope and to the top of the ridge to investigate many of the caves, most of which proved to be unoccupied, though three Japanese were killed near caves directly north of New Jetty. The companies moved over the first slope to a second ridge line which was parallel to and about seventy-five yards north of the first. Company G started looking for a trail which was thought to lead over the ridges to the plateau north of Bosnek, but it was Company E which, shortly after noon, found the ill-defined track. A few Japanese from the 2nd Company, 222nd Regiment in a pillbox temporarily prevented the two companies from securing the trail, which was not cleared until 2:00 hours, after the pillbox had been destroyed. During the late afternoon, patrols were sent north of the ridges to the area which the Japanese had surveyed for an airdrome. A few Japanese , most of whom fled upon being sighted, were found at the airdrome site, but there were no signs of large organized enemy groups north, northeast, or east of Bosnek insofar as the 186th Infantry could ascertain.

The only enemy action during this day would be an air attack by four Japanese bombers. A few enemy planes which flew over Biak around noon fled before anti-aircraft guns from ship or shore could be brought to bear. But all anti-aircraft crews were on the alert to expect further Japanese air action late in the afternoon. Because of the difference in time of sunset at the closest Allied and Japanese bases, Japanese aircraft could remain in the Biak area about half an hour after Allied planes had to leave. The expected attacks developed shortly after 4:00, when four Japanese two-engined bombers, accompanied by three or four fighters, approached the beachhead from the north, flying low over the ridge behind Bosnek and thus escaping radar detection. Some excellent targets were ready for the Japanese. Admiral Fechteler had permitted four LST's to tie up side by side at one of the jetties. Although he knew this move to be tactically unsound, he considered it justified because of the importance of the cargo aboard the LST's and because the jetty provided the only good spot for LST beaching. The Japanese bombing was accurate, but the LST's were lucky. None of the Japanese bombs exploded! Though the Japanese planes also bombed and strafed the beaches, none of the bombs dropped ashore exploded, while the strafing runs killed only one man and wounded two others. All four bombers were shot down by ground or ship-based antiaircraft, and the Japanese fighters were driven off by some Allied fighter planes which had remained late in the area. One Japanese bomber crashed into the water, sideswiping an SC which was standing offshore. Two of the ship's crew were killed and nine wounded. The SC had to be towed away for repairs, and a few other naval vessels suffered minor damage from strafing. There was negligible damage to supplies and equipment ashore. Total Allied losses as a result of the air raid were three killed and fourteen wounded, most of them naval personnel. Unloading also progressed satisfactorily, with 12000 men, 12 medium tanks, 29 artillery pieces, about 500 vehicles, and an estimated 3000 tons of bulk cargo being landed by 5:15.

Meanwhile, Colonel Haney’s 162nd Regiment had begun landing shortly after 9:00 and immediately started moving west along the main coastal road towards Biak’s three airdromes. Moving with speed, the 3rd Battalion passed through Ibdi village at 10:30 and then began to traverse the difficult Parai Defile. At 11:15, the regimental Intelligence and Reconnaissance Platoon discovered an enemy position on the face of the cliff west of Ibdi, that the 162nd Infantry first learned of the existence of the Parai Defile. At 1:00 the 3rd Battalion, with six tanks of the 603rd Tank Company leading the advance, arrived at the eastern entrance to the defile. There was no large Japanese force stationed along the cliff, but the few Japanese had such a tactical advantage over troops moving along the coastal road that they were able to delay the 162nd Infantry's advance for some time. Meanwhile Company E, which had been attempting to advance along the ridge north of the rest of the regiment, had found that the terrain and thick vegetation made progress along that route next to impossible. Since the company was lagging far behind the rest of the advance and since strong enemy opposition had not yet been encountered either inland or on the coastal route, it withdrew to join the rest of the 2nd Battalion on the beach, and by the time that battalion had reached Parai, Company E was back in place.

By 3:00, the 3rd Battalion had successfully pushed through the defile and had secured Parai and a large jetty at that village. Progress west of the Parai Defile was without noteworthy incident during the rest of the afternoon, so Haney’s 2nd and 3rd Battalion would be able to dig in at Parai by nightfall. On the other side, Kuzume was surprised by the landings, but he was expecting the enemy to land exactly there, where the extreme narrowness of the beach and the few entrances inland would make deployment difficult. Deciding to seize this momentary advantage, he thus ordered his 1st and 3rd Battalions to carry out an attack all along the Bosnek beachhead during the night. On the 3rd Battalion front, after an unsuccessful raid against two batteries near Ibdi. Then the 3rd Battalion, 222nd Infantry , renewed the attack with grenades and rifle fire, some circling to the north around Battery C and a few others moving against Battery B, located 200 yards to the east. Attacks on Battery C continued until daylight, when the last Japanese withdrew. The action cost Battery C 4 men killed and 8 wounded, while a near-by antiaircraft detachment lost 1 man killed and 1 wounded. Over 15 of the enemy had been killed during the night and an unknown number wounded. The 1st Battalion also raided the beachhead, suffering many casualties as a result.

On the morning of May 28th, the 162nd then resumed its westward advance, with its 3rd Battalion rapidly proceeding through Mokmer village without opposition. By 9:30, however, the Americans began to face stiff resistance at a road junction nearly 1500 yards west of Mokmer. Supported by artillery, Company K would be able to push to within 200 yards of Mokmer Drome; yet Kuzume would rapidly counterattack them with his 2nd Battalion. Charging repeatedly, the Japanese would eventually force the Americans to pull back by noon, with Lieutenant Yokoyama Hideo dying heroically during these attacks. Emboldened by this success, Kuzume then launched an all out assault from the East Caves area.

On the main ridge north of Mokmer the Japanese had another strongpoint east of the West Caves, which was called by the Japanese the East Caves. Behind Mokmer the ridge rose to a height of 240 feet. It was not so steep a cliff as the Parai Defile barricade, but it could not be climbed without the use of hands. About three quarters of the way to the top was a flat ledge from which two large caverns, similar to those in the West Caves area, could be entered. The Japanese constructed pillboxes on the ridge both below and above the ledge, and in the caverns they emplaced mortars, 20-mm. guns, and heavy machine guns. Observation posts were also set up at the East Caves, from which an unobstructed view of the coast from Parai to the west end of Mokmer Drome could be obtained. The Biak Detachment used the East Caves principally as living quarters, supply dumps, and as a connecting link between the Ibdi Pocket and the West Caves. Continued Japanese occupation of the East Caves would endanger Allied troop and supply movements along the coastal road from Parai to Mokmer Drome. The enemy threw more troops into the battle from the East Caves area until the attackers were coming not only from the west but also from the northwest and north. The Japanese split the 3rd Battalion by driving a wedge along the cliff between the troops on the shore and those on the terrace. Companies L and M were cut off. The 2nd Battalion, attempting to get on the terrace to the north of the 3rd Battalion, was pinned down by Japanese fire from the East Caves and was unable to advance. Company G, on the terrace north of the main road and between the 2nd and 3rd Battalions, was also cut off.

In response to the attacks, Haney ordered the 1st Battalion to move north from Parai onto the main coastal ridge to outflank the enemy positions, but efforts to do so were halted by enemy fire from the East Caves. Two companies patrolled in the broken terrain along the main ridge but were unable to move westward. Most of Company L and the Company M detachment which was also on the coral terrace managed to find a covered route back to the rest of the 3rd Battalion on the shore, but one platoon, initially surrounded, had to fight its way eastward into the lines of the 2nd Battalion, north of Mokmer village. Company G, on the terrace north of the main road and between the 2nd and 3rd Battalions, was also cut off and withdrew to the 2nd Battalion only with difficulty, and after it had suffered many casualties from Japanese fire. During the afternoon the 3rd Battalion stood off two more concerted enemy counterattacks, one at 12:00 and another shortly after 2:00, and suffered more casualties from the enemy mortar and artillery fire. During the latter attack, the Japanese began moving some light tanks forward from the Mokmer Drome area. The 3rd Platoon, 603rd Tank Company, engaged these tanks at a range of 1,200 yards and, with the aid of fire from destroyers lying offshore, drove the enemy tanks back into defilade positions. Three tanks of the 603rd were damaged by Japanese artillery fire and three men of the same organization were wounded during the action. Meanwhile, General Fuller had decided to reinforce the 3rd Battalion, 162nd Infantry. The 1st Platoon, 603rd Tank Company, moved west along the coastal road. At the same time small boats manned by the 542nd Engineer Boat and Shore Regiment were also sent forward with ammunition and medical supplies, both dangerously low. The small craft moved along the shore out of range of Japanese mortar and artillery fire until opposite the 3rd Battalion's position and then shot inshore at full speed, one by one. Supplies were replenished and the worst casualties evacuated despite continued shelling of the 3rd Battalion's position by the Japanese. The 1st and 2nd Battalions continued their efforts to clear the Japanese from the terrace behind the 3rd but met with little success.

By late afternoon, just as the 3rd Battalion's position was becoming untenable, Fuller gave up plans for further attempts at reinforcement and ordered Haney to withdraw his 3rd Battalion. The withdrawal started slowly because communications difficulties still prevented concentration of supporting fires. However, at 5:00 the regimental commander finally ordered the 3rd Battalion to start moving back along the coastal road. Tanks were to act as point, and rear guard and close-in artillery fire was substituted for a disengaging force. The battalion was to continue eastward until it had passed through the 2nd, which was setting up a new defensive position east of Mokmer village. The men of the 3rd Battalion moved in small parties along the beach and main road, which was intermittently swept by Japanese mortar, machine gun, and rifle fire. Many troops were unable to use the main road, but had to drop down to the beach below the overhanging cliff. Four tanks brought up the rear and protected the north flank. Between 1830 and 1900 all elements of the 3rd Battalion reached safety beyond the 2nd Battalion's lines and began digging in for the night east of the latter unit. Casualties for the day, almost all of them suffered by the 3rd Battalion, were 16 killed and 87 wounded.

Facing strong resistance, he also decided to commit his tank company to the attack. At around 8:00, new waves of Japanese infantry, now supported by four tanks, appeared west and north of the 2nd Battalion, thus beginning the first tank battle of the war in the Southwest Pacific Area. The 2nd Battalion, 162nd Infantry, with the 1st Platoon, 603rd Tank Company, in support, was astride the main coastal road 1,000 yards east of Mokmer. The battalion's left flank was on the beach while its right was against the coastal cliff and less than forty yards inland. Between the beach and the cliff was a coconut grove. The main coastal road crossed the rise of the cliff at a point about 475 yards west of the 2nd Battalion's lines. Shortly after 8:00 the Japanese tanks, followed by an infantry column, advanced down the incline where the main road crossed the cliff and deployed in echelon left formation in the coconut grove. The Japanese vehicles were light tanks, Type 95, weighing about nine tons, carrying a crew of three men, and armed with one 37-mm. cannon and two 7.7-mm. machine guns. They were opposed by two General Sherman M4A1 medium tanks, the heaviest armament on which was the 75-mm.

Each Japanese tank was stopped by one round of 75-mm. armor-piercing ammunition, while the enemy infantry was literally mowed down by the machine guns and mortars of the 2nd Battalion, 162nd Infantry. Armor-piercing 75-mm. shells passed right through the Japanese light tanks, and the Shermans followed with a few rounds of 75-mm. high explosive, which tore holes in the Japanese vehicles and blew loose their turrets. During this action several hits scored on the Shermans by the Japanese 37-mm. guns caused no damage. About thirty minutes after the first attack the Japanese sent in a second wave of three tanks, which used the same route of approach and the same formation in the coconut grove. These three were quickly destroyed by three Shermans. One enemy 37-mm. shell locked the 75-mm. gun of one Sherman in place, but the American tank backed part way into a shell hole to obtain elevation for its weapon and, despite the damage, managed to destroy one of the enemy tanks. The Japanese tanks having been stopped and the leading elements of the second infantry wave killed, the attack disintegrated and the enemy withdrew. For an hour or so the Japanese were quiet, but late in the morning, under the cover of machine gun fire and mortar barrages, they began to circle north of the 2nd and 3rd Battalions, 162nd Infantry. New infantry attacks began about 12:00. The enemy was unable to dislodge the 162nd Infantry, but his mortar fire caused many casualties within the regimental perimeter and the Japanese managed to cut the coast road east of a large T-jetty at Parai. Company B and the Cannon Company counterattacked the Japanese roadblock behind close-in mortar support and succeeded in dislodging the enemy by fire and movement.

During the afternoon of May 29, the 162nd thus moved back to Parai, where the 2nd Battalion and two companies boarded some amphibious craft back to Bosnek while the rest of the regiment moved overland through the Parai Defile and took up positions at Ibdi The 162nd Infantry's casualties during the day were 16 killed, 96 wounded, and 3 injured. The regiment estimated that it had killed over 500 Japanese during the day. Though Kuzume’s forces had suffered massive casualties, they had heroically managed to stop the enemy advance and would subsequently push troops forward to Parai and into the cliffs along the Parai Defile. They would however also lose most of their armor during these attacks. Only five tanks survived and were withdrawn to the West Caves.

Pending the arrival of reinforcements, General Fuller planned to use his available troops to hold the west flank at Ibdi and expand the beachhead at Bosnek. The 162nd Infantry was to establish a semicircular perimeter beginning on the beach west of Ibdi, reaching north to the main ridge, and returning to the beach at the village. The 1st Battalion, 186th Infantry, would maintain a perimeter around Mandom, where the Hurrican Task Force HQ was located, while the 3rd Battalion moved over the ridge behind Bosnek to set up defenses on the inland plateau. The 2nd Battalion, with part of the 3rd attached, would remain at the Bosnek beachhead. During this period, the 800 well-armed men of the 3rd Battalion, 222nd Infantry in the Ibdi Pocket, made only harassing attacks with small groups against the positions of the 162nd Infantry. On 30th and 31st of May the 162nd Infantry patrolled around the main ridge near Ibdi for a route over which large bodies of troops might move north to the inland plateau in preparation for the second attack westward. During the course of this patrolling, it was discovered that the main ridge from Bosnek to the Parai Defile actually comprised a series of seven sharp coral ridges, the crests of which were 50-75 yards apart and separated by gullies 50-100 feet deep. These separate ridges were honeycombed with small natural caves, potholes, and crevices. There was little soil on most of the coral, yet the area maintained a cover of dense rain forest containing trees 8-20 inches thick and 100-150 feet high. The 162nd Infantry discovered two native trails over the ridges. The most easterly of these, designated "Old Man's Trail," began on the beach road about 1,200 yards west of Mandom. It was a fairly well defined track which swung north over the seven ridges along a comparatively easy route. Another track began 1,200 yards to the west, near Ibdi. Called "Young Man's Trail," the latter followed a very difficult route over the ridges to the inland plateau. Both of these trails ran through the outer defenses of the Ibdi Pocket, into which the Biak Detachment, on 30 May, moved the 3rd Battalion, 222nd Infantry. On 30 and 31 May the 162nd Infantry's patrols along the ridges north of Ibdi and Mandom were harassed by the Japanese in the Ibdi Pocket, which had not yet been recognized as a major enemy strong point. On 30 May the 162nd Infantry located a water hole near the beach terminal of Old Man's Trail. A regimental water point established there was constantly harassed by Japanese rifle fire from the Ibdi Pocket area or by small enemy parties which moved down out of the ridges north of Ibdi and Mandom. The Cannon Company, 162nd Infantry, was therefore assigned the missions of clearing the enemy from the water point area and protecting that important installation from Japanese attacks. Halfway through the Parai Defile, a little over a mile west of the 162nd Infantry's main perimeter, an underground stream ran from the base of the cliff into Soanggarai Bay. At the point where the main road crossed the stream, the 162nd Infantry set up an ambush to prevent Japanese infiltration from the west along the beach. The ambush site was also used as a patrol base from which small parties reconnoitered along the cliffs of the Parai Defile to discover enemy dispositions in the area. Patrolling on 30th and 31st of May cost the 162nd Infantry 6 men killed, 17 wounded, and 4 injured.

On the main coastal ridge between the village of Ibdi and the Parai Defile the Biak Detachment developed another center of resistance which came to be known as the Ibdi Pocket. The terrain in the area was a series of knifelike east-west ridges separated by depressions and crevices up to fifty feet deep. These ridges were connected in places by cross-ridges, and the entire area was covered with thick rain forest and dense jungle undergrowth which had found a foothold in the coral. Pillboxes of coral and logs, hasty emplacements of the same materials, small caves and crevices, and foxholes at the bases of large trees were all utilized by the enemy to defend the area.

Back to the Wakde-Sarmi area, General Patrick was preparing to launch another assault on Lone Tree Hill. On the morning of May 27th at 7:00 two destroyers, firing on Lone Tree Hill and the Maffin Strip area, started scheduled fire support for the day's advance. Artillery and infantry action on this morning was much more closely coordinated than on the previous day. The destroyer fire lasted until 7:45, at which time the field artillery and all the 81-mm. mortars of the 158th Infantry laid concentrations on suspected and known enemy positions in the defile, on Lone Tree Hill, and on Hill 225. After this Colonel Herndon sent his 1st Battalion against the defile between Lone Tree Hill and the eastern nose of Mount Saksin and his 2nd Battalion against Hill 225. At 8:30 Company F, moving around Company E on the south flank, started its attack. Behind close artillery support, apparently controlled by artillery liaison planes for the most part, Company F pushed up a terrain feature initially believed to be Hill 225. It was not discovered until late the next day that F Company was actually on the eastern nose of Mt. Saksin and about 700 yards east of its reported location. Since artillery fire had knocked out two enemy machine gun nests which had been delaying the advance, patrols of Company F were able to reach the top of the eastern ridge. The rest of the company moved up the hill at 10:00; encountering scattered rifle fire from enemy positions to the southwest. Company E, just before noon, arrived atop the same hill on F's right. Company E had orders to secure the southern slopes of the defile between Hill 225 and Lone Tree Hill. Company B, still at the eastern entrance to the defile, was again unable to make any progress and during the morning was held up by machine gun and mortar fire from concealed enemy positions on the southern and southwestern slopes of Lone Tree Hill. No sooner had some of these positions been eliminated by American artillery and mortar fire than Company B was subjected to enemy machine gun and mortar fire originating from the northeast side of Hill 225, the reported location of Companies E and F. Actually, the artillery fire had not been entirely effective, because it had not reached into deep draws or caves in which many of the Japanese weapons were emplaced. Company E, attempting to move down the northern slopes of the eastern ridge to Company B's aid, was soon forced back by enemy rifle fire and infantry counterattacks from the west. At the same time small parties of Japanese, under cover of their own machine guns, started a series of minor counterattacks against Company B. Company F did not become engaged in this action. Instead, the company dug in on the ridge it was holding and sent patrols to the south and west to probe Japanese defenses. It was soon discovered that the combination of rugged terrain and Japanese machine gun and rifle fire limited patrolling to a very small area. North of Company B, Company A patrolled along the west bank of the Snaky River and on the eastern slope of Lone Tree Hill during the morning and early afternoon. About 4:30 the company moved in force up Lone Tree, finding the eastern slope of the hill to be unoccupied. Most of the fire that had harassed the company during the morning had apparently originated on the beach below the northern face of Lone Tree Hill. For the night the unit dug in at the crest of the hill. Again, little ground had been gained, although the eastern nose of Mr. Saksin and Lone Tree Hill had been at least partially occupied. At the same time, Patrick was informed that two battalions of the 163rd Regiment would be shipped to Biak to reinforce Fuller on June 1st, with General Krueger also preparing the 6th Division led by Major General Franklin Silbert to be dispatched to Wakde to replace the 163rd. Yet before this could occur, Colonel Matsuyama crossed the Tementoe River and launched a surprise night attack against Toem.

During pitch-black night at 8:30, an estimated 100 Japs struck 1st Battalion's area. Divided into small groups, but in two major commands, they carried grappling hooks, knives, grenades, knee-mortars, and rifles. Their grappling hooks had two prongs, like anchors and were attached to long ropes by which they could pull to explode booby traps harmlessly. A knee mortar barrage began the attack. While their mortars drove the men to ground, their grappling hooks caught booby trap wires and exploded attached grenades. They struck from southeast and southwest, two different commands about 150 yards apart. First command shouted wildly and threw grenades. They fired a light machine gun down A Company's street and holed up their tents. But this command's howling rush with grenades was just a feint to cause confusion. The second command, around 35-40, made the main drive. Easily they broke through 1st Battalion's far-spread perimeter holes. An estimated 25 made the serious penetration. They were trying to reach the Regimental command post to kill the top officers. Some of the staff officers were actually cut off outside their holes in a tent and actually unarmed. Ten Japanese almost reached the command post before they were cut down. Such was the official report, but 163rd men said that they tried to blow up the motor poo, nearly 100 of them. From a slit trench, four blazing M-1s stopped them, from the motor pool chief Staff Sergeant Burton, Staff Sergeant Engbretson, T/4 Switzer, and T/5 Donakowski. They piled up 13 dead Japanese, the last just 20 feet away. On a whistle signal, all Matsuyama's men withdrew.

The wild attack prompted Patrick to not to ship the 163rd towards Biak. The following morning, after another well-timed preliminary artillery bombardment, Herndon once again threw his forces against the Ilier Mountains, yet the result was the same as before. Nonetheless, his troops would be able to cover the amphibious arrival of two tanks to aid in further attacks; but with the situation soon becoming untenable because of strong Japanese counterattacks, all his companies ultimately had to withdraw to the Snaky River line. On May 29th, Krueger finally notified Patrick that the two battalions of the 163rd would have to leave for Biak the next day, so this would force Patrick to cease offensive action and withdraw the 1st Battalion, 158th Regiment back to Arare. Yet further Japanese counterattacks also forced Herndon to withdraw his remaining forces to the Maffin area as well, where he would form a new defensive line.

Patrick ultimately disagreed with Herndon’s decision to retreat, judging the withdrawal to be unwarranted and would relieve Herndon of his command, replacing him with Colonel Earle Sandlin. Colonel Herndon's fears of attack along his line of communications had been well taken, for the Right Sector Force had begun flanking movements designed to recapture the entire Maffin Bay area. However, the combat engineers quickly proved their versatility by driving off the enemy force with rifle, carbine, and machine gun fire. Five of the engineers were killed. Enemy casualties could not be estimated since the Japanese removed their dead and wounded during the night. The remainder of the night was more quiet, and the next morning the defenses along the Tirfoam were improved. There were a couple of minor attacks during the afternoon and desultory rifle and 70-mm. or 75-mm. artillery fire was directed against all American units still west of the Tor. The 147th Field Artillery Battalion, withdrawing to the east bank of the Tor late in the afternoon, was struck by some of this enemy artillery fire and lost one man killed.

A new defensive line along the Tirfoam was being developed on May 30th as the bulk of the 163rd Regiment would depart for Biak. This left Patrick’s forces spread out over almost twelve miles of coastline, just as Colonel Yoshino was about to launch his night attack. After the difficult river crossing, the 223rd Regiment had spent three days moving into the jungle southwest of Arara, from where they launched a series of simultaneous attacks against some anti-aircraft positions along the beach.

A 6:05 on June 30th, a guard at B Battery's Position No 6 challenged two men in the jungle across the beach road. Other Japanese were moving west down the road. When they did not answer his challenge, he fired, and hit the ground. Instantly, Japanese machine guns, rifles, mortars, and even grenades hit the B-6 position. The anti-aircraft men killed 10 Japs, but one heavy machine gun jammed. The second gun became overheated and had to cease fire. The Japanese were hard to hit in the dark. They were heavily camouflaged with leaves and nets down to their hips. After one American was killed, the anti-aircraft men left their emplacement and fled 500 yards east on the beach road to Battery A's Position 7. Joined with the men of A-7 - they had already stopped one attack - the B-6 men helped fight about 15-25 Japanese. From 6:40 to 4:30 next day, the Japanese struck intermittently, but rifle and machine guns fire repelled them. About 500 yards west of the B-6 position where the first attack had occurred, Battery A-6 also endured harassment from Japanese mortar, rifle, and machine gun fire. At least twice, the gunners repulsed attacks. A fourth position, Battery B-8, which was 400 yards west of A-6, was assailed about 6:30 also. The anti-aircraft men's .50 multiple heavy machine gun became overheated and jammed. Rifle ammo was running out. Scurrying from the gun-pit, they took cover in the shore brush until the Japanese left at 4:30. All attacks began about the same time, about 8:30, and some men glimpsed a Jap officer with his saber who was giving orders. All Japanese dead had rolls of white gauze in their mouths, and the Japanese officer had completely covered his lower face. The Americans thought that they used these means to prevent them from shouting or screaming when they were wounded. While they attacked the anti-aircraft batteries, Yoshino's men also tried to storm 1st Battalion 158 Infantry protecting Task Force Headquarters and the supply dumps. About 7:00, rifle and machine gun fire began impacting 1st Battalion positions. A captured heavy machine gun fired also. At 10:00 came a furious suicidal attack against B Company - beaten off with rifles, grenades, bayonets, pistols, and even knives. They failed to fire the supply dumps with demolition charges and Molotov cocktails. In the end, the Americans miraculously only lost 12 killed and 10 wounded while inflicting heavy casualties on the enemy. But fearing more enemy attacks, Patrick would decide to reduce the number of separate perimeters along the beach, from 21 to only 8.

The bulk of the 158th had to withdraw behind the Tor, leaving only its 2nd Battalion west of the river to secure the bridgehead. Facing little resistance, the Japanese recaptured Maffin, though they would be unable to push Sandlin’s troops behind the river. Yoshino and Matsuyama were unable to coordinate their efforts however, allowing the Americans to continue to strengthen their defenses for the next few days, with the Japanese only able to launch nightly raiding attacks that were easily repelled. On June 5, the first units of Major-General Franklin Sibert’s 6th Division then began to arrive, freeing up the 158th to continue with its offensive.

Sandlin then launched an attack with his 1st and 2nd Battalions supported by tanks crossing the Tor to attack Maffin on June 8, meeting increasingly strong enemy resistance from a line of hastily-repaired bunkers and pillboxes. The tanks were able to reduce the Japanese defenses due to their strong firepower, but not before the Americans had to dig in by nightfall.

The night passed without incident and early on June 9th patrols began to probe westward toward the Tirfoam. Scouts reported that the Japanese were holding another defense line, including reoccupied bunkers, on a slight rise at the west bank of the river. About 10:00, tank-infantry teams began to destroy the Japanese-held positions along the new line. While tank 75-mm fire was destroying bunkers or forcing the Japanese to seek cover, infantrymen crept forward to toss grenades into bunker gun ports or shoot down Japanese who tried to escape from the area. While these tank-infantry team operations were taking place, the rest of the two infantry battalions rested. Japanese 75-mm. fire, from a weapon emplaced on the beach between the Snaky River and Lone Tree Hill, harassed the 1st Battalion for a while, but this fire was summarily stopped when a 155-mm howitzer of the 218th Field Artillery Battalion scored a direct hit on the enemy piece. By 11:30 the enemy defensive positions had been cleaned out and the 1st and 2nd Battalions resumed the advance westward. Aided by fire from the 147th Field Artillery, which had supplanted the 167th in the close support role, the two infantry units probed cautiously forward, and it was not until 3:30 that both reached the east bank of the Tirfoam. Opposition was scattered, but the American units lost 6 men killed and 6 wounded. It was estimated that 50 of the enemy had been killed and one was captured.

At this point, the 158th would have to stop its advance because they received new orders from Krueger, who planned to employ the regiment for an assault on Noemfoor Island, 300 miles northwest of Sarmi, in late June or early July. As such, advances west of the Tirfoam would be postponed until a second combat team of the 6th Division could arrive in the area to relieve the 158th in mid-June.

General Sibert assumed command of the Tornado Task Force on June 12th. On 10 and 11th June the 158th Infantry limited its activities to patrolling, consolidating defensive positions, and driving Japanese outposts westward. One outpost, lying southeast of the 2nd Battalion, was manned by about a hundred Japanese and had to be cleared by tank fire and infantry assault. The Japanese, who were members of a 223rd Infantry company assigned to the Right Sector Force, fled toward Mr. Saksin, leaving behind 4 heavy machine guns, 1 light machine gun, 2 70-mm. howitzers, and 1 37-mm. antitank gun. On 14 June the 20th Infantry, 6th Division, relieved the 158th Infantry at the Tirfoam. The 158th recrossed the Tor and went into a defensive perimeter on the west bank of Tementoe Creek. Patrols sent south and east during the next week encountered a few stragglers from the Japanese garrison at Hollandia or from the Matsuyama Force. On the 22nd the entire regimental combat team was relieved of all combat responsibility in the Wakde-Sarmi area and began final preparations for the Noemfoor Island operation. During its operations in the Wakde-Sarmi area the 158th Regimental Combat Team lost 70 men killed, 257 wounded, and 4 missing. The unit took 11 Japanese prisoners and estimated that it killed 920 of the enemy. With their supply line compromised, Yoshino and Matsuyama would also decide to withdraw from their present positions about this time, which would allow the 36th Division to establish better defensive positions in the Ilier Mountains line. Yet that is all for Operation Tornado and Hurricane for now, as we now need to head over to the Imphal-Kohima front.

By June, the situation at Manipur saw General Slim’s 14th Army losing all of their advantages. Despite the extreme odds, with a slim chance of success, General Mutaguchi continued his wild attacks against Imphal. As it was, the two armies had been battling it out in difficult terrain and conditions. There were the steep and often jungle-covered hills, the heat for men not accustomed to it, the risk of tropical diseases like malaria and the leeches – not to mention the weeks and months of both physical and psychological strain from fighting a formidable enemy. The monsoon rains that began later in May only made matters worse. As the days passed by, the low-lying areas in the Imphal Valley would flood because of the downpours, while the streams and small rivers everywhere would become raging torrents. The water level of Loktak Lake would also rise, making it especially uncomfortable for the units of both sides dug in at some of the lakeside villages on the Tiddim Road. Dysentery and diarrhea became an ever-greater concern. Foot rot would start to set in for men in their flooded positions. The slopes in the hills became slippery and that much more treacherous to navigate. The incessant rains would dissolve stretches of ‘fairweather’ roads and ‘jeepable’ tracks into mud and slush everywhere, while triggering landslides in the hills. For the units on higher altitudes like the Shenam Saddle, Point 5846 and the Ukhrul area, the nights would become shockingly cold and damp, adding to their misery. Yet things were undoubtedly harder for the Japanese, who had carried few supplies and didn’t expect to be strung out fighting for so long.

To the north, General Sato’s 31st Division were withdrawing from Kohima towards Ukhrul, defying Mutaguchi’s orders, with General Miyazaki providing rearguard at Viswema, whileGeneral Grover’s 2nd Division pursued them. Miyazaki’s men held out at Visweman until June 12th, before withdrawing to Maosongsang. Then they held out at Maosongsang until June 16, before retreating to the last holding position at Maram. Over to the south, General Brigg’s 5th Division was engaging Colonel Matsumura’s 60th Regiment, fighting brutally for control over the Imphal-Kohima road. The battered Japanese defenders were fighting tooth and nail to prevent the opening of this vital supply line. The 9th and 123rd Brigades pushed on, they would only be able to capture the Zebra hill on June 7. The following day, the 3/14th Punjabis made a wide hook and arrived on the road behind Japanese lines by nightfall, where they would repel three heavy counterattacks. This would allow the 123rd to clear the hill positions near Modbung and link up with the Punjabis on June 11th. The 9th Brigade made great progress during these days, pushing on to Satarmaina by June 13th. General Gracey’s 20th Division was also attacking towards the Ukhrul Road during this period, with the 80th Brigade advancing northwards from Kameng up the Iril River Valley on a wide encircling move towards Litan while the 100th Brigade attacked up the road towards Kasom. Though the 80th faced little resistance, the 100th would struggle to progress against the fierce counterattacks of the recently-arrived 67th Regiment. By mid-June, the 51st Regiment was also ordered to abandon its positions and support the 67th on the Ukhrul Road.

Over in the southwest front, the arrival of reinforcements in the form of the 2nd Battalion, under the command of Colonel Yanagisawa Kanji at the end of May, gave General Tanaka a gleam of hope that he could launch another offensive in early June. On June 6th, four battalions under Colonel Sasahara attacked the 63rd Brigade’s hill positions, applying such great pressure, General Cowan was forced to withdraw his brigade to Bishenpur the following day. On June 7th, Tanaka ordered his recently-arrived reinforcements to clear Ningthoukhong and retake Potsangbam, yet their first coordinated attack would end in failure. The attack was almost single-handedly held by Sergeant Hanson Victor Turner of the 1st West Yorks. Defending his platoon’s position on the perimeter, Turner grabbed some grenades and charged forward, throwing them at the Japanese. He did this five times, going back to gather grenades each time and returning to the attack in the face of Japanese grenade and small-arms fire. He was killed on the sixth occasion while throwing a grenade. For his bravery, Turner was posthumously awarded the Victoria Cross. The Japanese eventually captured some ground in North Ningthoukhong, but withdrew after being struck from the air and shelled.

In the meantime, after the Japanese defeat at the Gibraltar Box, the Yamamoto Detachment would continue to harass the British-Indian positions from Nippon and Scraggy Hills in early June. On the evening of June 9, the Japanese put in their last major attack on Scraggy, starting with a heavy artillery bombardment. Artillery concentrations were directed at the Japanese and an airstrike was made on their part of Scraggy and Lynch. The Gurkhas followed up with an advance. Although some ground was recovered, the Japanese maintained their grip on Scraggy’s crest. Having suffered many casualties and feeling that the Gurkhas’ new position was sufficiently strong, General Roberts then decided to halt the counterattacks, thus leaving General Yamamoto in control of Scraggy up until the end of July. Concurrently, as a last hope to break through towards Imphal, Mutaguchi was planning to conduct a desperate offensive on Palel with some reinforcements that would fail to arrive in time. Due to these delays, he would end up sending some of Yamamoto’s exhausted troops to recover Langgol and advance to the hill northeast of Palel. The Japanese managed to get beyond Langgol and attack some positions in the foothills near Palel Airfield, but were soon rebuffed. They finally sent in a commando raid on the airfield in early July, which succeeded in blowing up eight planes.

Over in Ningthoukhong, Tanaka launched another heavy assault on June 12th. Though a salient on the other side was initially captured, a ferocious counterattack would ultimately evict them. This action was performed by units of the 48th Brigade, including reinforcements sent from Potsangbam. Rifleman Ganju Lama of the 1/7th Gurkha Rifles who earned a Victoria Cross in this action. To the west, Tanaka ordered the newly-arrived 151st Regiment of Colonel Hashimoto Kumakoro to attack the British picquets overlooking the Silchar Track. After a wave of assaults, Water Picquet would fall on June 21; yet the 32nd Brigade would respond immediately with a series of counterattacks that developed into confused fighting as positions were won and lost by both sides.

On the night of 25 June, no less than a company of Japanese began attacking Mortar Bluff, a picquet position bereft of cover and a short distance away from Water Picquet. It was held by a small garrison of some 40-odd men of the 2/5th Royal Gurkha Rifles who had replaced the 7/10th Baluchis. In pouring rain, the Japanese first bombarded the position with mortars and guns at point-blank range. For the next few hours, the infantry repeatedly attacked the surrounded and dwindling garrison. Subedar Netra Bahadur Thapa defended the besieged position almost through the night, organizing counter-attacks with whatever ammunition and grenades his unit had left. The Japanese finally overran Mortar Bluff the next morning, with Netra Bahadur Thapa fighting to his death. He was posthumously awarded the Victoria Cross.

A few hours later, a company of the same unit formed for a counterattack on Mortar Bluff. In the face of heavy fire, Naik Agan Singh Rai led his section in charging a Japanese machine-gun post and killing its crew. It then recaptured Mortar Bluff and neutralized a 37mm gun position and crew. Rai now advanced on a Japanese bunker and killed its occupants, after which his company also recovered Water Picquet. For his actions that day, Rai won the Victoria Cross, the second for the 2/5th Royal Gurkha Rifles the same day. Faced with such counter-attacks and intense artillery fire from Gun Box, the last throw of the Japanese 33rd Division around the Silchar Track ended in failure. This left Hashimoto and Tanaka empty-handed for all the losses they had suffered. Tanaka was forced to withdraw units before they were annihilated. On July 2st the 214th Infantry, with only 400 effectives remaining, completed its withdrawal to the area south of Nouyangtek and the 151st was directed to move back to Laimanai. Having been decimated by sickness and straggling en route to the front, the strength of the entire 151st Infantry Regiment was, at that time, less than 100 men.

Back in the north, Briggs’ units continued to struggle for control of the Satarmaina area. The struggle over the next week centered on the main feature east of the road, the hill named Liver. The 3/9th Jats attacked repeatedly to try to dislodge the Japanese from this feature. One such attempt was made on June 15th, when Hurribombers strafed the hill, followed by heavy artillery concentrations from 25-pdrs, 3.7in howitzers and 3in mortars. A Jat company climbed the hill, but had to withdraw some 100 meters from its objective because of heavy machine-gun fire. At the same time, the 1/17th Dogras were sent off on a wide hook left of the road and the 3/14th Punjabis were able to secure the Octopus position by June 20.

North of them, Grover’s troops would also be able to break through Maram and continue south down the road on June 20, finally meeting the Dogras two days later. Beaten, Miyazaki had nonetheless fulfilled his task and could now withdraw east towards Ukhrul. Sato's rearguard fought determinedly. Often a few men with an artillery piece, grenades and a machine-gun would take up positions on the high ground above tracks, ambushing the British advance guards before melting away to repeat the performance a few km further back or, as was often the case, remaining obstinately in their positions until they were killed. Few were free from disease and fatigue, but surrender played no part in these men's vocabulary; they fought on till overtaken by a British bullet or bayonet or, more often, by starvation and exhaustion. But the 31st Division had literally fought itself to death. Exhausted men lay in pits unable to defend themselves, suicide squads with anti-tank mines tottered towards the advancing Lee Grants and Stuarts to be mown down by accompanying infantry, or obliterated by shellfire

Although the battered 31st Division would manage to survive the Kohima disaster, General Sato would be relieved of his command as he had refused to carry Mutaguchi’s orders numerous times. As a result, Miyazaki was promoted to Lt-General and given temporary command of the division by the end of June. Meanwhile, though his men had resisted like demons, Matsumura now had no choice but to abandon the road and retreat east towards Ukhrul with what remained of his command due to this new threat to the north. On June 21, the Liver position would fall at last. Again, the Japanese positions were bombed and strafed from the air, this time by three squadrons of Hurribombers for half an hour. The 4th and 28th Field Regiments, as well as a troop of the 8th Medium Regiment, fired a concentration on Liver that covered it in dust and smoke. Three companies of the Jats now went in, and yet this attack was also held by the Japanese on and around Liver. They had had enough, however, and by the next morning were found to have withdrawn from the feature. The Jats suffered around 150 casualties that week, including 33 killed. The 15th Division would adopt new defensive positions at Ukhrul to cover the withdrawal of Miyazaki and Matsumura. The main force of the 15th Division then went into defense positions in a line extending generally from Ukhrul through Tongou, Shongphel and Aishan to the 3524 Pass in order to be in position to cover and pick up the Right Assault Unit and the Miyazaki Detachment as they withdrew to the east. In order to hold the new defense positions, all available men, including all those in the rear service units, were thrown into the line. Finally the Imphal-Kohima road was reopened. Slim knew while the battle was not yet over, it had already been won.

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The landings at Biak was another allied success. The first tank battle of the war in the Southwest Pacific Area saw the American Sherman's absolutely devastate Japanese Type-95’s. Within the Burma front, General Slim had finally reopened the Imphal-Kohima road spelling doom for Mutaguchi’s failed offensive.