- 122 - Pacific War - Operation Thursday, March 19-26, 1944

The Pacific War - week by week

Last time we spoke about the beginning of the Japanese counteroffensive on Bougainville, action on the Burma front and New Guinea. General Hyakutake was under immense pressure to dislodge the Americal force from Bougainville. He unleashed a grand counter offensive trying to break the American defensive lines. Both the Japanese and Americans began suffering heavy casualties, yet neither side wavered in its resolve. Over in the Burma front, the Galahad unit, aka Merrills marauders joined their British, American and Chinese allies in pushing the Japanese back. There were some issues involving friendly fire, but overall the allies were making gains in a theater where the Japanese had dominated for years. Over in New Guinea, the Japanese were continuing to retreat to Madang. Things were going so terribly, units were now being deployed to defend the western part of New Guinea. Japan was simply not winning the war of attrition.

This episode is the Operation Thursday

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.

Things have really been heating up on the Burma front. General Mutaguchi basically tricked his own superiors into allowing him to invade India under the guise of Operations HA-GO and U-GO. This saw Japanese units advancing towards Imphal and Kohima. On the other side General Stilwell’s forces were advancing upon Myitkyina in the north, as General Slim’s 15th corp were clashing with the Japanese in the Arakan region. Americans, British, Indians, Chinese were all performing operations to halt Japanese attacks and push further into Burma, but on top of all of that, we now need to talk about our favorite child born from the onion eating madman Wingate, the Chindits.

All the way back in early February, Operation Thursday was in development. The operation was basically an extended version of the first Chindit raid, this time in two waves, with 3 brigades making long marches across the Chindwin. The first wave would go into the enemy territory, then 2-3 months later the second wave would come in to reinforce them. There were large issues with the operation, namely a lack of aircraft. Aircraft were being used for the Arakan campaign and flying supplies over the Hump. Chiang Kai-shek would not part with any aircraft set to go over the Hump and not even Mountbatten had the authority to touch the issue. Regardless Thursday would be authorized and its goals were as follows; to assist Stilwell’s advance; to create favorable conditions for the Y-Force to gord the Salween and to inflict maximum damage to the Japanese in northern Burma. Their principles targets were the Shwebo-Myitkyina railway and the Myitkyina-Bhamo-Indaw road. There would be 4 strongholds to be designated, Piccadilly, Chowringhee, Broadway and Templecombe, the last one later renamed Aberdeen. The US 900th airborne engineer company would clear strips suitable for Dakotas to land.

On February 4th Wingate and Stratemeyer, commander of the Eastern Air command issued the essential guidelines for Thursday, stressing this raid would require the wounded being flown out from the strongholds rather than to be abandoned as was the case with the first expedition. Stratemeyer added orders to bomb the stronghold areas prior to their establishment, though Wingate had instead favored diversionary bombings of Rangoon, Mandalay and Bangkok.

On February 5th of 1944, Fergussons 16th brigade kicked off first from Ledo and onlookers would remark they looked more like a mule train than a commando force. There were elephants, 250 bullocks, 547 horses and 31314 mules assigned to the operation. Fergusson’s 4000 men took 500 mules, fully laden along with them. They avoided Japanese forces by traversing exceptionally difficult terrain. It would be a full month before all Brigade Battalions crossed the Chindwin river. The main target was Indaw, although two Columns were tasked to attack the town of Lonkin, in the Kachin Hills and 20 miles west of Kamaing. Two gliders, loaded with folding boats, outboard engines, and gasoline, were towed by air to the Chindwin River and softly set down on a sandbar. Not only were the necessities delivered to Fergusson, but also for reuse the pair of C-4As were plucked from the scene by a C-47. Wingate traveled with Fergusson and his men for the first the start of the grueling ascent up the Paktai. They faced mud slides, torrential rain, the usual Burma experiences. It would take them all of February to reach the Chindwin, after that it was another 200 miles to their target of Indaw. Wingate departed after the first few days, but would come back over by aircraft to observe the crossing of the Chindwin. Fergusson had been critical of Wingate in January, describing him as a liar, but he continued to believe in the man. “Wingate was sometimes wrong in small things but never in big.’

When Wingate met Fergusson he showed up with an entourage of war correspondents, trying to publicize the Chindits activities. He began talking to them of a new fad he came across, turtle eggs which he declared provided singular nourishment. Like so many of Wingate’s eccentric ideas, no one favored it. Turtles’ eggs were found to be no more appetizing than those of any other reptile, and in fact many of the Chindits experienced stomach pains and other digestive problems after eating them. Then Fergusson had to tell Wingate they could not possibly reach Indaw earlier than March 20th. The expectation had been March 5th, thus Wingate was pissed.

At the same time, the 1st air commando had performed aerial reconnaissance over the 3 selected locations suitable for bringing gliders, Broadway, Piccadilly and Chowringhee. Yet Wingate had issued strict orders banning any further overflights fearing it would give up their intentions to the Japanese. Despite the warning, Colonel Cochram dispatched a B-25 on March 5th to perform a final look over the sites, giving last minute reports that Broadway and Chowinghee were clear, but it looked like teak logs were sprawled over the Piccadilly site. Since the Piccadilly site seemed unsuitable, Brigadier Calvert persuaded Wingate to send the Gliders into Broadway. On the night of March 5th, the gliders carrying the second wave were flown in. The pathfinder gliders, first to touch down, set out flare pots to facilitate succeeding waves of gliders. However, the field proved far less accessible than expected. For many years, the local people had logged teak and during the wet season, slid the huge logs across the ground down to a river. Over time the technique gouged deep ruts that elephant grass covered, making the trenches invisible to aerial photographs or reconnaissance. Co-commander of the 1st air commando group John Richardson Alison recalled "They formed perfect glider traps, and there was no way to avoid them. The gliders arrived overhead in large numbers, and when a glider starts down there is no way to stop it. As each one hit the trenches the landing gears would come off and the gliders would go in a heap. We tried to arrange the lights to spread the gliders all over the field to avoid collisions, but this was impossible. They were coming in too fast to change directions, and glider after glider piled into each other while landing.” The next day the gliders landed successfully on Chowringhee and the airstrip was completed by nightfall. Meanwhile transports began to bring Calverts 77th brigade, followed by Brigadiers Lentaigne’s 111th brigade. By the 11th, the fly in was complete, now 9250 Chindits were landed on Broadway and Chowringhee.

The Chindits then began their advance east to hit the Lashio-Bahmo-Myitkyina motor supply line. Trekking from Chowringhee, Morris Force Columns headed north-east, to cut the Bhamo-Myitkyina road, as 111 Brigade’s British Battalions marched south from Broadway to link up with other elements flown into Chowringhee. Their job was to stop Indaw being reinforced from the south. Thus, 111th Brigade set up ambushes and roadblocks south of Indaw although part of the brigade which landed at Chowringhee was delayed in crossing the Irrawaddy River, before moving west to Pinlebu. Broadway was held with a garrison that included field artillery, anti-aircraft guns and some six Spitfires that would successfully repel a Ki-43 attack on March 13.

Meanwhile Calvert’s columns advanced over the railway towards Henu, where they would establish the White City stronghold, roughly 20 miles north of Indaw. Columns were directed to demolish bridges and railroads around the Kadu, Mawhun and Pinwe stations. It was a long and gruesome march over some very tough terrain. For example, it took Column 45, bringing up the Brigade’s rear, nine days to cover the first 35 miles, to Hkalak Ga. They set out again on February 22nd. By this time, the men were tiring of K-rations, which gave calories but no bulk. Smoking was confined to lunch and evening bivouacs. The Leicesters were in the lead and reached the Chindwin on February 29th. Meanwhile, 45 Recce’s columns, still in the rear, reached the Chindwin during the afternoon of Saturday March 4. It had taken them 21 days to cover some of the wildest, toughest country on earth.

After successfully crossing the Chindwin, on March 12th Fergusson received orders to seize Indaw’s airfield, destroy supply dumps in the area and establish a new Stronghold, to be known as Aberdeen. The Brigade continued south, moving parallel to and west of the railway. Meanwhile Calvert’s 5 columns to 5 days to reach Henu. The South Staffords were the first to arrive and the Japanese reacted before they could dig in – they would have to fight for the Block. were on the alert to resist their incursion. In the afternoon of 16th, Calvert launched a bayonet charge up Pagoda Hill, with the Chindits soon engaging the Japanese engineers, who were charging down, in a vicious hand-to-hand combat. Eventually, with the assistance of the 1st Air Commando’s close support, the Japanese were successfully pushed off the hill and the White City stronghold was established. For the loss of 23 dead and 64 wounded, Calvert’s Chindits had killed 42 Japanese and had effectively cut the line of communications supporting the 18th Division far to the north. In the ensuing days, the stronghold would be developed into a fortress, with some airstrips becoming operational by March 21st.

The time chosen to drop the Chindits near the 18th Division’s line of communications was most embarrassing to General Tanaka. On January 10, Headquarters, 15th Army, had suspended movement of supplies to the 18th Division in order to accumulate stocks for the projected attack on Imphal. Shipment was to resume as soon as the Imphal operation was underway. Then the Chindits cut the rail line, and just when the supply movement was to have resumed, the 18th Division had to start living on what was at hand in north Burma. It was aided by the 56th Division, which shipped about ninety tons of vital supplies to Myitkyina via Bhamo, but Tanaka's supply position was fundamentally compromised by the Chindits fighting along the railway to north Burma.

On the 18th Calvert’s force took a large night drop, including wire and entrenching tools. They slaved away to turn the Block into a fortress. The parachutes festooned across the forest canopy gave the Block its popular name – White City – soon a maze of slit trenches and bunkers roofed with heavy timbers. White City, with its commanding position, became a powerful concentration of force, with Calvert’s three Battalions steadily reinforced. The Block grew a heavily wired perimeter and a garrison strong enough to raise a substantial force for mobile action. Calvert regarded White City as “ideally situated around a series of hills about 30ft to 50ft high, with numerous small valleys in between, with water at the north and south. I brought the village of Henu into our defended area, so that we would have a good field of fire across the paddy to the south. I also brought into the perimeter what we called ‘OP Hill’, a feature slightly higher than our own little hills, to give us good observation. Our perimeter was now about 1,000 yards long, mostly along the railway, and 800 yards deep.” Calvert now had 2,000 men inside the Block, with mobile “floater” columns operating to north and south, together with a sizeable force protecting Broadway. He called in air strikes to punish a Japanese force at nearby Mawlu.

Meanwhile the 15th Army's staff were beginning to panic. Many of the officers were beginning to see the paint on the wall and were calling for the Imphal offensive to be abandoned. General Mutaguchi refused to give up and instead directed some troops to thwart the Chindits. To do this a reserve battalion was taken from the 15th, 18th, 33rd and 56th divisions and redirected to Indaw while Colonel Yanagisawa Hiroshi’s 67th regiment moved over to Napin. Major General Hayashi Yoshihide’s 24th independent mixed brigade was ordered to advance north along with some units of the 2nd division who would open a new HQ at Indaw by March 25th. Further behind the lines, the 53rd division led by Lieutenant-General Kono Etsujiro were directed to rush north to engage the enemy as fast as possible. All of this was still a diversion from the main effort against Imphal and it basically helped Stilwell’s operations. To aid the war effort the IJA air force were also stepping up their game. On march 18th, a KI-43 raid managed to destroy some Spitfires grounded at broadway. William 'Babe' Whitamore and Alan M Peart managed to get airborne, with both shooting down one 'Oscar' each. Whitamore was shot down and killed but Peart survived for over half an hour, holding off over 20 enemy fighters. The remaining Spitfires were destroyed on the ground for the loss of another pilot, Lt Coulter. Peart flew back to Kangla the same day in his damaged Spitfire and reported the action.

The following day, Fergusson’s footsore columns finally neared Manhton village and prepared to establish the Aberdeen Stronghold. After an appalling final leg of their terrible march into Burma, with progress reduced at some points to 100 yards per hour, the 16th Brigade elements finally reached Aberdeen clearing, some 60 miles west of Broadway Stronghold. The Aberdeen clearing was at Manhton, just east of the Meza River and 25 miles from the railway supplying the Japanese 18th Division, fighting Stilwell’s Chinese troops, and the 56th Division, opposing the Yunnan Chinese. Aberdeen took in three villages: Manhton, Kalat and Naunghmi. Aberdeen’s site had a lot of advantages. It was only two days’ march from Indaw and 14 miles from the Indaw-Banmauk road. The dominant feature was a hill at the northern end, where the permanent garrison would be quartered. There were, however, some drawbacks – mainly the fact that, as Fergusson himself acknowledged, it was “highly accessible” to the enemy. The 16th brigade were exhausted and needed rest, the planned attack against Indaw would have to be delayed.

To the south, on the 21st the Japanese launched a major night attack against White City. The battle was ferocious, Calvert’s Chindits managed to successfully repel numerous attacks for over 8 hours until the Japanese finally pulled back. The Japanese suffered an estimated 300 deaths, the Chindits also suffered heavy losses. In the White City perimeter, men took solace from the companionship of the animals sharing their hardships. A pony gave birth to a foal during a Japanese attack and murderous mortar barrage. The foal was named “Minnie” after a nearby mortar post. In another attack, Minnie was kicked in the eye by a panic-stricken mule. They fought to save the eye and Brigadier Mike Calvert ordered regular reports of Minnie’s progress to be circulated to all forward positions. When recovered, Minnie took to “doing the rounds” of the mortar positions, on the scrounge for tea – which she drank from a pint pot. Minnie survived White City and further battles and went on to enjoy a distinguished military career as the Lancashire Fusiliers’ mascot. Minnie got out to India, traveled to Britain and subsequently joined the Regiment on a tour of duty in Egypt.

On the 23rd, leading elements of Brigadier Thomas Brodies 14th brigade began to arrive to Aberdeen with the task of blocking the Indaw-Banmauk road. At the same time, the 111th Brigade’s columns were ordered to stop Japanese movements along the Pinlebu-Pinbon. The advance on Indaw may have been compromised inadvertently by the movements of 111 Brigade. One of its British Battalions, the Cameronian’s, moved in a wide sweep west of Indaw, crossed the Banmauk road on the 22nd, with orders to cut the Indaw-Homalu road. They bumped into a Japanese patrol at night and their two wounded were flown out by light aircraft the next day. The men became hardened to the realities of jungle warfare against the Japanese, who fought to the death. Some columns were luckier than others regarding their supply drops. The King’s Own columns had a reputation for being unlucky. During the 21-23, three successive attempts to re-supply them failed. Already, the columns were heavily reliant on food purchased in villages.

Wingate then visited Bernard Fergusson at Aberdeen. Fergusson wanted to rest 16 Brigade after its exhausting march in but Wingate told him to press on to Indaw before it could be reinforced. Unfortunately, however, the Japanese had already accomplished this. The 16th brigade departed Aberdeen on the 24th, heading south to Auktaw, drawing closer to the heavily-reinforced Indaw. Between them were strongpoints at Thetkegyin village. This part of the country was quite dry and the Japanese controlled all the water sources, thus the Chindits would be forced to fight to drink. Despite successfully blocking the Indaw-Banmauk road, most of Fergussons columns would get sucked into heavy fighting around Thetkegyin on the 26th. Only the 2nd Leicester’s columns 17 and 71 made it to Indaw, holding a toehold grimly until they were ordered to pull back. After 5 intense days of fighting, Fergusson ordered his men to withdraw and regroup at Aberdeen.

Back on the 24th, Wingate flew down to Broadway and White City on a morale-boosting mission to 77 Brigade. After a side trip to Aberdeen, he flew back to Broadway and then on to Imphal. This would be the last time Calvert ever saw him. Wingate flew back to Imphal, landing at 6:23pm before taking off again at 8pm for Hailakandi airfield. Half an hour later the B-25 crashed into the Naga hills due west of Imphal near the village of Thilon. Cochran dispatched a special force to search for the crash and they found it the next day. Everyone inside the B-25 had died instantly. Investigators believed the crash could have occurred from freak weather, engine failure or pilot error. But since it was Wingate, there was an air of reluctance to accept it was just an accident. An official investigation concluded it had been the result of engine failure and that the pilot unsuccessfully tried to return to Imphal. Yet other theories emerged and were tested out. Sabotage was the first, but it was ruled out because the B-25 had been closely guarded at all times and nobody knew Wingates intentions or flight plans. Thunderstorms and turbulence were cited as plausible, but all pilots in the area confirmed no thunderstorms. General Slim opted for extreme turbulence, even though the pilots’ testimony also ruled that out. ‘The wreckage was eventually found on the reverse side of a ridge, so that it was unlikely that the aircraft had flown into the hill. The most probable explanation is that it had suddenly entered one of those local storms of extreme turbulence so frequent in the area. These were difficult to avoid at night, and once in them an aeroplane might be flung out of control, or even have its wings torn off.’ Another theory had it that the B-25’s cluster bombs had broke loose from the bay’s rolled into the fuselage and detonated.

Given, well how Wingate was, many in the Indian army rejoiced at his death, some quoted Shakepears Macbeth ‘Nothing in his life became him like the leaving it.’ Mountbatten wrote to his wife Edwina ‘I cannot tell you how much I am going to miss Wingate. Not only had we become close personal friends but he was such a fire-eater, and it was such a help to me having a man with a burning desire to fight. He was a pain in the neck to the generals over him, but I loved his wild enthusiasm and it will be difficult for me to try to inculcate it from above.’ General Slim had this to write on Wingate “With him, contact had too often been collision, for few could meet so stark a character without being violently attracted or repelled. To most he was either prophet or adventurer. Very few could regard him dispassionately; nor did he care to be so regarded. I once likened him to Peter the Hermit preaching his Crusade. I am sure that many of the knights and princes that Peter so fierily exhorted did not like him very much – but they went crusading all the same. The trouble was, I think, that Wingate regarded himself as a prophet, and that always leads to a single-centredness that verges on fanaticism, with all his faults. Yet had he not done so, his leadership could not have been so dynamic, nor his personal magnetism so striking.” And so went Wingate, probably one of the most colorful characters of the Pacific War.

In light of Wingates death, General Slim promoted Lentaigne to Major-General and appointed him the new commander of the 3rd Division. Slim, had loose operational control over Special Force, selected Brigadier Lentaigne to be Wingate's replacement after conferring with Brigadier Derek Tulloch, Wingate's Chief of Staff. Lentaigne was judged to be the most balanced and experienced commander in the force; he had been an instructor at the Staff College at Quetta, had led a Gurkha battalion with distinction during the grueling retreat from Burma in 1942 and had commanded a Chindit brigade in the field. As an officer of Gurkha troops, he had a similar outlook and background to Slim. The other Chindit brigade commanders were unknown quantities, mostly without staff qualifications, some of whom had never even commanded a battalion-sized unit in combat before 1944, and Wingate's staff officers lacked the necessary combat experience. The force's second-in-command, Major General George Symes, was bypassed by Slim and formally protested and asked to be relieved. In selecting Lentaigne, Slim did not take into account the tensions between those Chindit commanders and staff who were closely associated with Wingate, and Lentaigne, who had a classical "line" officer's background and had been critical of Wingate's methods and techniques.

The loss of Wingate caused significant damage to the Chindits, it was as if they lost their persona. The month following Wingate’s death, the 14th, 16th and 111th Brigades appeared to lack direction. They stayed around Indaw, ambushing the Japanese but with no major objective. As Slim, noted, "The immediate sense of loss that struck like a blow, even those who had differed most from him—and I was not one of these- was a measure of the impact he had made. He had stirred up everyone with whom he had come in contact. "

At Broadway, for instance, after days of aerial attack, the 2nd Battalion, 146th Regiment stormed across the airstrip on March 27th and attacked its lightly defended western perimeter. Thankfully, the attack was repulsed, partly due to superior numbers. Three days of hard fighting at Broadway then ended with counterattacks and concentrated airstrikes finally dislodging the enemy. Though the Japanese regrouped, they were again pushed back by counterattacks supported by airstrikes in the end. Meanwhile, White City’s defenses were strengthened. The Dakota brought over four 25 pounders, six Bofors anti-aircraft guns and four two-pounder anti-tank guns. This would allow Calvert to attack Mawlu on the 27th. As a result, the village was successfully taken and burnt out with flamethrowers, with the Chindits then reducing the remaining Japanese strongpoints. By the end of March, however, several major changes were made at the highest level. Much of the air support was diverted to the critical battles of Imphal and Kohima, where troops were cut off and could only be resupplied by air. The 23rd Brigade, yet to fly in, was also dispatched to Kohima. Finally, the Chindits were formally subordinated to General Stilwell, who ordered them to abandon their dispersed operations around Indaw and concentrate on interdicting the supply lines to the Japanese forces opposing his troops. In early April, while the 3rd West African Brigade and the remainder of Brodie’s 14th Brigade were being brought in to Aberdeen, Lentaigne ordered the 111th Brigade led by Major John Masters to advance north and build the new Blackpool stronghold, which would block the railway and main road at Hopin. To Calvert’s disgust, he was ordered to abandon White City and Broadway and move north to support the new stronghold, as Lentaigne insisted that the Chindit brigades were too far apart to support each other. But that is all for today in the Burma front as we now need to head over to Bougainville.

The counterattack on Bougainville shifted on March 15th. General Kanda noticed Iwasa and Muda’s Units were struggling to break through in their areas, so he changed the point of attack for the Magata Unit. He withdrew the bulk of the forces from Hills 700 and 260, sending them westward in preparation for a final attempt to break through towards the Piva airfields. The reserve 6th cavalry regiment was sent to reinforce Mugata’s rear while the 2nd battalion, 4th South Seas Garrison was brought forward to try and contain the Americans at the Saua river mouth. Thus, there was a five-day break in the major action while the Japanese transferred the 13th and 23rd Regiments to reinforce what was left of Colonel Mugata's 45th Regiment. At this time the Japanese maintained patrols, which sometimes got into firefights with American patrols. A number of Japanese were taken prisoner during these patrol actions. From time to time the Japanese would lob mortar shells into the 129th's sector. During this lull in the fighting, the tired American riflemen and engineers were busy strengthening the defenses. Pillboxes were rebuilt, tactical wire reestablished, illuminating devices installed, communications improved, and the many Japanese dead buried. Information gained from prisoners and reconnaissance led General Beightler to conclude that the Japanese would launch a major assault on March 23rd. It was estimated that General Kanda had approximately 4850 men at his disposal to renew the attack on the 129th's front.

Meanwhile the American artillery was smashing the South Knob who were now only being defended by a screening force. On the 18th, General McCulloch launched a final combined assault against the Knob. Companies A and B of the 132nd regiment performed a enveloping maneuver and enjoyed some initial success until they came upon heavy fire from Japanese bunkers. At 2:10pm the next day the attack resumed, this time successfully destroying several pillboxes, but the Americans were halted short of the crest.

On the 20th, Company B was reinforced with a platoon from A and they circled the south end of the Knob, reaching the base of the trail going east. There they discovered the Japanese could pour down just as much fire, seeing another failed attack. Because of this failure it was decided to leave the reduction of Hill 260 to artillery and mortars. On the 23rd, the Iwasa and Muda units had completed their movement, now 4850 troops were concentrated on the northern sector ready to perform a major assault. Having been forewarned by the captured documents, the American forces were expecting the attack. The Americans unleashed a heavy artillery bombardment against Magata’s assault forces as they were forming up, disrupting their initial advance and causing massive casualties. Late in the evening, Kanda launched his own assault, with General Iwara’s 2nd battalion, 23rd regiment and 2nd battalion, 13th regiment through Cox Creek followed by Muda’s men. Advancing under darkness, the Japanese surprised the Americans and managed to knock out 3 pillboxes under heavy fire. The area of attack was so narrow, artillery and air strikes could not be performed safely, so General Beightler ordered the 148th regiment to respond with a combined tank-infantry assault. With the support of Sherman’s the Americans stormed the Japanese positions at 7:25am successfully reoccupying must of their lost territory within only 20 minutes. The Japanese tossed further attacked but were being gradually pushed from the narrow area by noon.

During the afternoon, General Kreber’s corp and divisional artillery began concentrating their fire on a very narrow sector where the bulk of the surviving Japanese were dug in. An infantryman of the 129th recalled: “All these big guns opened fire into this area about 500 yards in front of us, and I remember what they called a million dollar barrage and it's something you never forget–the big guns shooting over your head. It was very frightening because you wondered whether one of these shells would not go far enough. It was all jungle out in front of us and when they got done it was all cleared out. They had knocked everything down. A lot of Japs were killed by this… I can remember the day after the big attack the bulldozers came in and dug these huge trenches and we had to go out and take the Japanese and drag them into these. Because of the warm weather they began to smell pretty bad. Many, many killed!” It was the heaviest artillery concentration seen as of yet during the Pacific War. It completely disrupted the Magata unit, causing tremendous casualties. The 2nd Battalion, 45th Regiment were completely disorganized; the 1st and 3rd Battalions were reduced to 20 men; the 1st Battalion, 81st Regiment were reduced to 40 men; and the 3rd Battalion, 53rd Regiment were down to 100 men. The massive losses forced the Japanese to withdraw.

General Hyakutake now realized his counteroffensive was a failure and forced to call it off. The Japanese were in full retreat by the 28th. The Magata force, with an estimated strength of over fifteen hundred men, utilized the Numa Numa Trail and withdrew toward the northern part of Bougainville. The remnants of the Iwasa and Muda forces, covered by reinforcements from the 4th South Seas Garrison unit and the 6th Cavalry Regiment, moved quickly along a number of trails to the relative safety of southern Bougainville. The units of the 17th Infantry Group returned to northern Bougainville and rejoined its parent unit. On the 28th, the 182nd regiment found the South Knob abandoned and finally secured Hill 260. The three-week battle for the rather insignificant knoll had cost the Americans 98 deaths and 581 wounded, counting 560 dead Japanese on the knob. Total casualties for the final Japanese counteroffensive on Bougainville would be 263 American dead and over 2489 Japanese bodies counted. In reality, Hyakutake’s 17th Army lost a total of 3000 killed and 4000 wounded in their March operations, including 2398 killed and 3060 wounded from the 6th Division. General Beightler expressed the feelings of many in stating that the beating administered to the 6th Division was a partial repayment for its role in the rape of Nanking in 1937. Although the Japanese would plan another concentrated assault on Allied positions later down the line, they would never again launch a major attack. For all practical purposes, the battle for the Solomons was now over. Now we need to jump over to the Southwest Pacific.

As a result of the Admiralty Islands being invaded a month ahead of schedule. Yet General MacArthur kept his gaze on the development in the Central Pacific. He needed to pick up the pace if he wanted to win the race, so he planned to carry out the invasion of Kavieng, bypassing the Hansa Bay area with a direct jump to Holland before the end of April. General Sutherland gave the Joint Chiefs an outline calling for the Southwest Pacific forces to move into the Hollandia area with two divisions on April 15, supported by the Pacific Fleet. Air, naval, and logistic bases would be established at Hollandia to support subsequent Southwest Pacific advances northwest to the Geelvink Bay region of Dutch New Guinea. The Southwest Pacific forces would then move to Geelvink Bay about June. In the middle of the next month, according to General Sutherland's presentation, three Southwest Pacific divisions would be sent against the Arafura Sea islands, southwest of Dutch New Guinea. There, air bases would be established from which to cover later advances to the Vogelkop Peninsula and Halmahera, both scheduled for mid-September, when Central Pacific forces might be ready to move to the Palaus. If the Marianas were bypassed, however, the Palaus might then be invaded as early as mid-July. Land-based aircraft of the Southwest Pacific Area could support a July invasion of the Palaus from air bases in the Hollandia and Geelvink Bay regions. If air bases on the Vogelkop, Halmahera, and the Arafura Sea islands proved inadequate to provide left flank protection for the move into the Philippines, then airdrome sites on Ambon Island might also be seized in September or October. The entry into the Philippines would be effected at southeastern Mindanao on 15 November 1944.

Yet for all of this, MacArthur needed something he did not have, the Pacific Fleet’s aircraft carriers. After concluding the Marshall islands campaign, Admiral Nimitz argued that the next move would be to bypass Truk and invade the southern Marianas and the Palaus islands to further neutralize the Carolines. To seize the Philippines a good fleet base would be required in the western Pacific. Nimitz proposed seizing Ulithi atoll, around midway between the Marianas and Palaus. Nimitz also argued the case for Woleai in the Carolines, 400 miles south of the Marianas. By early March, the Joint Chiefs of Staff thus met at the Washington Planning Conferences with Nimitz and Lieutenant-General Richard Sutherland, to hear about their plans and discuss what the best course of action would be. In the end, on March 12th, they issued a new directive for operations in 1944.

The Joint Chiefs ordered MacArthur to cancel his Kavieng operation and instead to complete the neutralization of Rabaul and Kavieng with minimum forces necessary. The Southwest Pacific's forces were to jump from eastern New Guinea to Hollandia on April 15, thus bypassing Wewak and Hansa Bay, with the mission to develop an air center from which heavy bombers could start striking the Palaus and Japanese air bases in western New Guinea and Halmahera. Once Hollandia was secured, MacArthur was to conduct operations northwest along the northern New Guinea coast in preparation for the invasion of the Palaus and Mindanao. The target date for the Southwest Pacific's landing on Mindanao in the Philippines was set for November 15. Admiral Nimitz, in turn, was ordered to cancel his Truk operation and to speed the aerial neutralization of Truk, Woleai, and other Japanese bases in the central and eastern Carolines. He was also directed to conduct heavy carrier strikes against the Marianas, the Carolines and the Palaus, and to provide carrier support and amphibious means for the Southwest Pacific's landings in the Hollandia area. The Marianas would be occupied by Central Pacific forces beginning in mid June and Palaus by mid September. The Joint Chiefs, were looking to extend Allied control over the eastern approaches to the Philippines and Formosa and to secure air and naval bases from which to support operations against Mindanao, Formosa, and the China coast.

The invasion of the Admiralty and Green Islands led the Americans to seize full control over the South Pacific. This allowed the US Navy to begin sending destroyers to harass the Japanese at Rabaul and Kavieng. Admiral Halsey at Guadalcanal assembled an invasion force to hit Kavieng. When he heard about the decision to cancel the Kavieng invasion, he searched for another task for the boys he got together. He decided to capture the Emirau island, lying halfway between Kavieng and the Admiralties, thinking it could be the last link to strangle Rabaul. For what would be the last operation of Cartwheel, Admiral Wilkinson put Commodore Reifsneider in command of the amphibious operation and assigned Lieutenant-Colonel Alan Shapley’s 4th Marines to carry out the landing. As a preliminary, Admiral Griffin’s Task Force 36, formed around four battleships and two escort carriers, also bombarded Kavieng and its nearby airfields on March 20th. The bombardment gave Rear-Admiral Tamura Ryukichi the impression that the expected invasion by Allied forces was imminent and he gave the order to kill all the European prisoners in Kavieng. At least 25 of them were executed in the Kavieng Wharf Massacre, which later led to six of the perpetrators being sentenced for war crimes in 1947. Sentenced to death by hanging, Tamura was executed at Stanley Prison on March 16, 1948.

Meanwhile Reifsneider’s convoy departed Guadalcanal in two echelons, successfully reached the unoccupied Emirau Island at 6:05am. The Marines of the two assault battalions, the 1st and 2nd Battalions, 4th Marines, traveled on nine high speed transports while the remainder of the force were on the dock landing ships, Epping Forest, Gunston Hall and Lindenwald, and the attack transport Callaway. One LSD carried the 66 LVTs for crossing Emirau's fringing reef, one carried three LCTs, two of them loaded with tanks, and the third carried three LCTs with radar sets and anti-aircraft guns. The LVTs were launched, and the assault troops transferred to the amphibious tractors using the APDs' boats, supplemented by those from Callaway while F4U Corsairs of VMF-218 flew overhead to make a last-minute check of the island for any signs of the Japanese. The assault waves touched down on schedule. The reserve 3rd Battalion's boats grounded on the reef soon afterwards, and its marines waded ashore through knee deep water. The only problem encountered was with launching the LCTs carrying the tanks. The LSD's flooding mechanism failed and the LCTs had to be dragged out by a fleet tug. While the detachment sent to occupy Elomusao Island was approaching the beach, some supposed opposition caused the amphibious tractors and then a destroyer to open fire, and a man was wounded by a shell fragment. After all of this…well the Marines were told by the natives the Japanese had left Emirau two months before and only a small detachment remained on Mussau Island. Thus 3727 troops and 844 tons of cargo were ashore by nightfall, when the ships sailed; and within a month, some 18,000 men and 44,000 tons of supplies had been landed and it had become a motor torpedo base that could keep watch on the north coast of New Ireland.

As for the Japanese Admiral Koga was planning to carry out a desperate program of reorganization, including the creation of the Mobile Fleet. Admiral Ozawa’s 1st Mobile Fleet was formed by the 2nd and 3rd Fleets; consisting of most of the IJN’s warships. This would leave the combined fleet as a mere administrative organization. Land-based forces in the Central Pacific were expanded, their main base was at Tinian; Saipan was fortified and it became the new fleet HQ. Fuel shortages and loss of tankers to submarine attacks had become so severe, Admiral Ozawa’s new command would have to remain within the Singapore zone. They would operate close to the Dutch East Indies oilfield and within Japanese waters for training.

Koga also prepared a new defensive plan, with the inner perimeter now extending from the Kuriles to the Nanpo Islands, then the Marianas and the Carolines to the west end of New Guinea. He also drew up plans for the formation of a 3rd Aircraft Carrier Fleet, in three divisions, each composed of three carriers. It looked very impressive on paper, but the reality was that the 3rd division actually consisted of two converted tankers the Zuiho and Chitose and the converted naval auxiliary ship Chiyoda. Furthermore, the carriers lacked any experienced pilots, with most of them having been lost around Rabaul and in the Solomons and Marshalls. Thus, new pilots for the three carrier divisions would have to be trained. Finally, he developed Plan Z, a strike against the American fleet the moment it entered the Philippine Sea. For this decisive battle, that in his eyes could allow the Japanese to win an “honorable peace”, Koga wanted to be prepared to use 500 planes on the carriers and another 500 on the islands, so he needed to increase the Japanese air force by about 50%, something that would be hard to achieve.

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And with that the South Pacific was liberated from the Japanese Empire. Operation Cartwheel was effectively done. The allies were squeezing the Japanese empire back to the home islands and honestly it was a good time to negotiate a peace on the side of the Japanese. But they would not do so, always on the search for the famed decisive victory.