- 183 - Pacific War Podcast - the Breakthrough on Okinawa - May 20 - 27, 1945

Last time we spoke about the battle of Malacca strait. In the intense Battle of the Malacca Strait, Japanese forces undertook a desperate evacuation amidst relentless attacks by the Allies. After suffering heavy casualties from previous confrontations, the Japanese regrouped and attempted to maintain their defensive positions. However, under the pressure of determined Allied assaults and strategic maneuvers, they faced increasingly fierce resistance. As the Allies advanced, they successfully overwhelmed Japanese defenses, leading to significant losses for the opposing forces. The battle transformed into a pivotal moment in the Pacific War as Japanese resistance crumbled, ultimately shifting the tide toward Allied victory. This clash not only showcased the harsh realities of war but also underscored the relentless determination of both sides as they fought for dominance in the region, marking a crucial step towards the conclusion of the conflict.

This episode is the Breakthrough on Okinawa

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. 

As of mid-May, General Buckner's forces had made steady, albeit slow, progress against the determined Japanese defenders on the Shuri defensive line. On May 16, the offensive continued. Colonel Schneider's 22nd Marines and Colonel Whaling's 29th Marines launched yet another unsuccessful assault on Sugar Loaf Hill, while Colonel Snedeker's 7th Marines exhausted their strength in a failed attempt to seize Wana Ridge. To the east, Colonel Coolidge's 305th Regiment advanced 200 yards closer to Shuri. Colonel Hamilton's 307th Regiment nearly captured Flattop and Chocolate Drop Hill but was ultimately pushed back. Colonel Dill's 382nd Regiment successfully cleared Dick Hill but came under intense fire from Oboe Hill. Meanwhile, Colonel May's 383rd Regiment made only minor gains on the southeastern slopes of Conical Hill and Love Hill, even as tanks broke through toward Yonabaru for the first time. The following day, the 383rd Regiment maintained pressure on Conical and Love Hills, prompting General Bradley to commit part of Colonel Halloran's 381st Regiment to the attack. To the west, the 382nd Regiment staged a hard-fought advance of 200 yards but was unable to capture Oboe Hill. 

Slowly the 77th Division forces between Flattop and Route 5 were reducing enemy positions bearing on the area in front of the 307th Infantry. By 17 May this progress began to show in the advances of the foot troops around Chocolate Drop. Covered by company heavy weapons out on both flanks, infantrymen worked around both sides of the hill to the huge caves on the reverse slope. Inside were 4 antitank guns, 1 field piece, 4 machine guns, 4 heavy mortars, and a American 60-mm. mortars. By nightfall the caves had been partially sealed off. During the night an enemy force launched a counterattack against the American positions around the hill but was repulsed with the loss of twenty-five Japanese killed. On the 17th another bitter struggle raged on Flattop. The struggle swayed back and forth across the narrow crest of the hill. Company K, the assaulting unit, had been reduced to fourteen infantrymen by the end of the day; finally it was forced back off the top. Tanks tried to go through the road cut between Flattop and Dick Hill, but two of them were disabled by mines, leaving the cut blocked. The road cut was later blown along its entire length by seven tons of bangalore torpedoes to remove the mines. Company E continued to push toward Ishimmi Ridge, where they faced a series of heavy Japanese counterattacks. Coolidge's 3rd Battalion and the rest of Hamilton's 2nd Battalion dug in just a few hundred yards north of Shuri and Ishimmi in the highway valley. Meanwhile, Coolidge's 1st Battalion was halted by heavy fire from 110 Meter Hill and the extensive fortress houses in Shuri's suburbs. The intense fighting had nearly depleted the 22nd Regiment, prompting General Amamiya to direct the 32nd Regiment to take over the defense of Shuri along a line extending from Ishimmi to Oboe.

Meanwhile, on Wana, the 7th Marines launched a renewed attack but were once again repelled. However, the 5th Marines succeeded in advancing to Hill 55. Further west, the bulk of the 29th Marines attacked toward Half Moon Hill, successfully reaching its forward slopes but later having to withdraw to more defensive positions overnight. Whaling’s 2nd Battalion also mounted relentless assaults on Sugar Loaf, each time suffering heavy losses in repelled attacks. As dusk fell, Japanese planes targeted American shipping, successfully damaging the destroyer Douglas H. Fox. On May 18, tanks played a crucial role in a successful assault on Sugar Loaf, executing a double envelopment while securing the top of the hill. The 2nd Battalion then advanced to Horseshoe Hill, while the remainder of the 29th Marines managed to secure the forward slopes of Half Moon.After a night of sporadic bombardment from enemy artillery and mortars, 3/7 again attempted to gain a foothold on Wana Ridge. During the morning supporting weapons concentrated their fire on the forward slopes and crest of the objective and at noon Company I, followed by a platoon of Company L, jumped off and fought its way to the ridge. The assault troops' gains "were measured in yards won, lost, and then won again." Finally, mounting casualties inflicted by enemy grenade and mortar fire forced Lieutenant Colonel Hurst to pull back his forward elements and consolidate his lines on positions held the previous night.

On the right flank of the division front the isolated platoon from Company E of 2/5 was unsuccessful in exploiting its hold on the western slopes of Hill 55. The men were driven to cover by intense enemy fire, and tanks again had to be called upon to supply ammunition and rations to the outpost. During the morning operations the 5th Marines laid protective fire with tanks and assault guns along Wana Ridge to support 3/7's advance. At noon, under cover of this fire, Company F sent one rifle platoon and an attached platoon of engineers into Wana village to use flame throwers and demolitions against the enemy firing positions in the ruins. Numbers of grenade dischargers, machine guns, and rifles were found in Wana and the tombs behind it and destroyed. Further advance into the draw was not feasible until the 7th Marines could occupy the high ground on the eastern end of the ridge and furnish direct supporting fire to troops advancing in the draw below. At 1700 the troops were ordered to return to their lines for the night. n the center, General Bruce pressed his attack deeper into the Shuri defenses, with Coolidge’s 3rd Battalion gaining 150 yards along the Ginowan-Shuri highway and Hamilton’s 2nd Battalion advancing up to 300 yards toward Ishimmi, although attacks against 110 Meter Hill and Flattop failed to gain ground. On the morning of 18 May, orders were given to stay at all costs. Lieutenant Bell said firmly, "We stay." The men resigned themselves to a last-ditch stand. Their grenades exhausted and their machine guns and mortars destroyed, the remaining men salvaged every clip of ammunition from the bandoleers of the dead. Spare workable rifles were loaded and bayonets laid alongside. Enemy pressure increased steadily during the day. Some Americans were shot at close range as they darted from hole to hole to escape grenades. At one time eight knee mortars were pounding the ridge, firing in pairs. Friendly artillery could to some extent keep off the charging Japanese but seemed unable to ferret out the enemy mortars, which were well protected. The moans of wounded men, many of whom were in pitiful condition from lack of water and of medical aid, added to the strain. All canteens had been emptied the previous night. Nevertheless, battle discipline remained excellent. The worst problem concerned the replacements, who were courageous but inexperienced. Thrust suddenly into a desperate situation, some of them failed at crucial moments. One man saw two Japanese attacking a sergeant thirty feet away, but his finger froze on the trigger. Another shouted wildly for a comrade to shoot some Japanese while his own rifle lay in his hands. Another saw an enemy soldier a few yards from his hole, pulled the trigger, and discovered that he had forgotten to reload. By the end of the ordeal, however, the replacements who survived were battle-hardened veterans. During the afternoon the 307th attempted to reinforce the small group. Elements of Company C tried to cross the open ground north of Ishimmi Ridge. Only the commander and five men reached Company E. The men scrambled safely into foxholes, but the commander, shot through the head while racing toward the command post, fell dead on the parapet of the command post foxhole. Spirits rose considerably when word came later in the afternoon that a litter-bearing unit of eighty men would try to get through in the evening. Enemy fire slackened after dark, and the first of the litter bearers arrived at about 2200. They immediately started back carrying casualties. Walking wounded accompanied them. The litter bearers moved swiftly and managed to avoid being seen in the light of flares. Through splendid discipline and good luck eighteen men were carried out in two and a half hours, and others walked out. The litter teams had brought some water and ammunition and the troops drank for the first time since the day before. The second sleepless night on the ridge passed. The 382nd Regiment continued to face heavy resistance from Oboe Hill but managed to secure the road cut between Flattop and Dick Hill. Meanwhile, Halloran’s 3rd Battalion could only push about 400 yards south due to the relentless mortar and small-arms fire coming from Hogback Ridge. At sea, a low-flying kamikaze aircraft struck LST-808 off Iejima, resulting in the deaths of 17 men.

The following day, while the 382nd and 383rd Regiments focused on neutralizing the cave positions and gun emplacements in the uneven terrain between Conical and Dick Hills, Halloran’s 3rd Battalion launched an attack to the south and west toward Sugar Hill but made little progress due to the heavy defensive fire. In the center, the 307th Regiment systematically worked to eliminate enemy firing positions on the high ground in front of them, employing every available weapon for the task. Colonel Smith’s rehabilitated 306th Regiment began moving up to replace the battered 305th, with its 3rd Battalion relieving Coolidge’s 3rd Battalion and portions of Hamilton’s 2nd Battalion along the low ground bordering the highway to Shuri, including the isolated men at Ishimmi Ridge. 

On 19 May the enemy seemed to intensify his efforts to recapture Ishimmi Ridge. The besieged troops wondered whether his supply of men and ammunition was inexhaustible. The Japanese launched several attacks which were repulsed with great difficulty. Only the support of artillery and mortars, together with self-propelled mounts firing with precision on both flanks of Ishimmi Ridge, prevented the enemy from making an attack in strength which would have overrun the American positions. One enemy attack of platoon strength was dispersed by mortar and machine-gun fire and by a four-battalion time-on-target artillery concentration. Japanese mortar fire continued to fall on Ishimmi, however, and took its toll during the day. A message arrived during the morning that Company E would be relieved that evening. By noon the radio had become so weak that further communication with the company was impossible. The day wore slowly on. By 2100 there was still no sign of the relief. Shortly afterward, however, rifle fire intensified to the rear, a sign of activity there. At 2200 Company L, 3d Battalion, 306th Infantry, arrived. The relief was carried out in pitch darkness; each member of Company E left as soon as a replacement reached his position. As the haggard survivors were about to descend the ridge at 0300, a bursting shell hit two of the newcomers; one of them had to be evacuated on a poncho. Carrying its own wounded, Company E followed a white tape to the rear and arrived safely. Of the 204 officers and men of the reinforced company that had made the night attack on Ishimmi, 156 had been killed or wounded. There were 28 privates, 1 noncommissioned officer, and 2 officers left of the original 129 members of Company E. The platoon sent in relief by Company C had gone out with 58 effectives and returned with 13. Of the 17 men in the heavy weapons section only 4 came back. Company E had spearheaded a several-hundred-yard advance toward Shuri, however, and with the help of supporting weapons had killed hundreds of Japanese around Ishimmi.

The 7th Marines launched one last unsuccessful assault on Wana Ridge before being relieved by Colonel Mason’s rested 1st Marines. Meanwhile, after repelling a strong night counterattack, the exhausted 29th Marines were also relieved by Colonel Shapley’s reserve 4th Marines, which made additional advances alongside the 22nd Marines, now under Colonel Harold Roberts. Four new regiments had been committed over the past few days to revitalize the offensive. On May 20, Shapley’s assault battalions gained more ground on Horseshoe Hill but were still unable to reach the crest of Half Moon, though they successfully repelled another strong night counterattack. To the east, Mason’s 2nd Battalion advanced rapidly to the base of 110 Meter Hill and captured part of Wana Ridge, while his 3rd Battalion secured a firm hold on the northern slope. Concurrently, the 5th Marines attacked southwest along the Naha-Shuri Road and successfully captured the high ground.

Meanwhile, in coordination with the 1st Marines, Coolidge’s 1st Battalion and Smith’s 3rd Battalion made a slow, grinding advance of about 150 yards, positioning themselves within 200 yards of the outskirts of Shuri in the highway valley. At the same time, the 382nd Regiment expanded its hold on the reverse slope of Dick Hill but remained unable to penetrate Oboe Hill. The 307th Regiment consolidated and expanded its positions around Chocolate Drop, finally seizing Flattop. Reducing the tiny hill continued to be ticklish work because enemy positions to the south still overlooked the area. The fighting was still so confused that three wounded Americans lay south of Chocolate Drop for two days before relief arrived. By that time two had died and the third was so delirious that he thought he was still fighting Japanese and had to be forcibly subdued. By 20 May the caves were completely sealed off. The enemy made a final attempt to retake Chocolate Drop, attacking in company strength, but was repelled with the loss of half his force. On the same day the 3d Battalion, using tanks, flame throwers, and demolition teams, finally secured the crest of Flattop. The final American attack started with a saturation shower of grenades. A chain of men extending from the base of Flattop passed hand grenades to the troops lined up along the crest, who threw the missiles as fast as they could pull out the pins. Having seized the advantage, the infantry moved down the reverse slope blasting caves with satchel charges and flame throwers. Tanks along the road cut accounted for many of the Japanese. BY 1545 Flattop had fallen. More than 250 enemy bodies lay on the crest and reverse slope of the hill.

Further east, Halloran’s 3rd Battalion made a slow but steady advance down the eastern slopes of Hogback, reaching the foot of Sugar Hill despite constant grenade duels with an enemy fighting desperately to hold every inch of ground. Additionally, the 1st and 2nd Battalions of the 383rd Regiment fought their way to jump-off positions within 300 yards of Love Hill, destroying enemy strongpoints that had obstructed their advance for a week. Meanwhile, back at sea, Japanese aircraft managed to damage two destroyers and three transports. The following day, the 383rd again attacked Love Hill but was ultimately forced to withdraw from its base due to fierce defensive fire. Despite this setback, May’s 2nd Battalion successfully supported the 381st Regiment in clearing Hogback and pushing to the top of Sugar Hill. To the west, the 382nd advanced quickly against moderate opposition toward Oboe Hill and Hen Hill, encountering retreating enemy units moving toward the high ground at Shuri. Concurrently, the 307th pushed 350 yards south of Flattop before being halted by enemy forces at the Three Sisters, while the 306th completed the relief of the 305th, with its 3rd Battalion advancing 200 yards unopposed to the eastern slopes of 110 Meter Hill.

Meanwhile, the 1st Marines continued their assault along Wana Ridge, making only limited gains at the Draw, where the 5th Marines held out and aggressively patrolled forward. The 4th Marines began their push toward the Asato River, achieving a costly advance of about 200 yards on Horseshoe. By nightfall, heavy rains began to fall, significantly impeding efforts to resupply assault troops and replenish forward ammunition dumps. Amidst this torrential downpour on May 22, Shapley’s 1st and 3rd Battalions slogged through the "gooey slick mud" to reach the bank of the rain-swollen river. This prompted the Japanese to evacuate Naha and establish new defensive positions on the Kokuba Hills. To the east, the continuous rain flooded Wana Draw with mud and water, transforming it into a makeshift lake. For the next few days, General Del Valle’s Marines were forced to attack without support, leading to aggressive patrolling rather than organized assaults.

The prospects of success for the infantry alone, slogging through the mud without the support of other arms, were not encouraging. Tanks bogged down, helplessly mired. Amphibian tractors were unable to negotiate the morass, and front-line units, which had depended on these vehicles for carrying supplies forward in bad weather, now had to resort to hand carrying of supplies and of the wounded. These were back breaking tasks and were performed over areas swept by enemy fire. Mortar and artillery smoke was used as far as possible to give concealment for all movement. Litter cases were carried back through knee-deep mud. Living conditions of front-line troops were indescribably bad. Foxholes dug into the clay slopes caved in from the constant soaking, and, even when the sides held, the holes had to be bailed out repeatedly. Clothes and equipment and the men's bodies were wet for days. The bodies of Japanese killed at night lay outside the foxholes, decomposing under swarms of flies. Sanitation measures broke down. The troops were often hungry. Sleep was almost impossible. The strain began to take a mounting toll of men. Under these conditions the Marine attack against Wana Ridge was soon at a standstill. The action degenerated into what was called in official reports "aggressive patrolling." Despite inactivity, enemy mortar and artillery fire continued to play against the American front lines, especially at dusk and at night. In the center, Bruce’s 77th Division faced similar challenges, with the 306th Regiment stalled and the 307th Regiment again unsuccessfully attacking the Three Sisters. There, Company A became isolated at the base of the forward slope of Jane Hill, nearly cut off by intense enemy mortar and machine-gun fire. For the following week, the 382nd Regiment struggled to make headway on Hen and Oboe Hills, where fierce hand-to-hand combat erupted. Similarly, all attempts by the 383rd Regiment to breach the defenses of Love Hill on the western side of Conical failed, as the 381st was also unable to make any progress against Cutaway.

General Hodge had also moved General Arnold’s rehabilitated 7th Division to assembly areas just north of Conical Hill to spearhead the advance toward Yonabaru and the high ground south of the village. Strengthened by 1,691 replacements and 546 men returned to duty from hospitals since it left the lines on 9 May, the 7th Division moved up to forward assembly areas just north of Conical Hill and prepared to make the dash through the corridor. At 1900 on 21 May the 184th Infantry, chosen by General Arnold to lead the way, was in place at Gaja Ridge, at the northern base of Conical. The initial move of the envelopment was to be made in the dead of the night and in stealth. General Buckner felt that "if the 7th can swing round, running the gauntlet, it may be the kill."

As part of this operation, the 2nd Battalion of the 184th Regiment moved out from Gaja Ridge during the night, swiftly and silently passing through Yonabaru in the early morning hours to capture Spruce Hill and Chestnut Hill in a surprise attack. Colonel Green’s 3rd Battalion then followed the 2nd Battalion through Yonabaru, but their assault on Juniper and Bamboo Hills was unsuccessful as the surprised defenders regrouped. The following day, Green’s two battalions continued to push toward these initial objectives, ultimately securing a solid line that stretched from the coastline across the southern slopes of Chestnut, and then over to Juniper and Bamboo by day’s end. This success allowed Colonel Finn’s 32nd Regiment to pass through Yonabaru and advance westward along the Naha-Yonabaru valley to assault the enemy’s western hill defenses focused around Oak Hill.On the west coast, after a successful night reconnaissance of the Asato River, the 4th Marines rapidly crossed the river under cover of smoke, beginning their advance toward a low ridge 500 yards south of the Asato. However, as previously noted, the torrential rain had turned every draw and gully into a sticky morass of knee- and thigh-deep mud in the center. The steep slopes of the hills and ridges, treacherous under the best of conditions, became virtually unassailable. Consequently, full-scale coordinated attacks had to be canceled, and only localized gains could be achieved.

Despite the breakthrough in the center, the Japanese command remained concerned about the threat posed to the flanks of the Shuri bastion by American advances along both coasts. While they believed the Naha breakthrough could be contained, every available soldier was deployed to establish a defensive line stretching from the southwest slopes of Conical Hill through Yonawa to the road junction village of Chan, aiming to eliminate Arnold’s spearhead that had penetrated into the Naha-Yonabaru valley. General Ushijima feared that his forces were being gradually encircled in the Shuri fortress, where they would become “easy prey” to overwhelming American firepower. In light of this situation, Ushijima began planning a withdrawal to the Chinen Peninsula or the southernmost part of the island, the Kiyamu Peninsula. This decision was met with resistance from General Fujioka, who expressed concern that thousands of severely wounded men would have to be abandoned during the retreat. 

Although the holding of the heights surrounding the city had been the keystone of the Japanese preferred plan, several factors now militated against its retention. There were an estimated 50000 surviving officers and men to be crammed into a final defense zone less than a mile in diameter. Once these troops were surrounded, the Japanese believed that they would be rendered ineffectual and become "easy prey" to overwhelming American fire superiority. In addition, Japanese long-range artillery pieces, many of which were still intact, could not be effectively utilized within the limited space that would be available. The best chance of prolonging the battle for Okinawa seemed to rest in defending the Kiyamu Peninsula region which was dominated by the Yaeju Dake-Yuza Dake Escarpment. Natural and artificial caves, sufficient to accommodate the whole of the surviving army, abounded in the area. The 24th Division, which had organized the terrain, had left a considerable amount of ammunition and weapons there when it moved north to the Shuri lines. The principal roads in southern Okinawa led directly to the proposed position, thus facilitating the movement of large bodies of men in the shortest possible time. These roads also gave American tanks an excellent route of advance, but only to the outposts of the defensive zone where cliffs, hills, and precipitous ridges barred the way. To add weight to his argument, General Amamiya indicated that his 24th Transport Regiment had preserved enough trucks to move the Shuri munitions reserve to the new position within five nights if weather conditions permitted. General Ushijima, after considering the respective positions of his staff and commanders, decided to order the move to Kiyamu. 

Although General Suzuki preferred the Chinen Peninsula, which his brigade had fortified, most officials supported a move to the Kiyamu Peninsula, where Amamiya’s 24th Division had previously established defenses in the natural and artificial caves of the Yaeju Dake-Yuza Dake Escarpment. Thus, transportation of wounded personnel and munitions reserves to the south commenced at midnight on May 23, with the bulk of the 32nd Army scheduled to begin their withdrawal six days later. 

On the night of 25 May, the remnants of the 62d Division were to pull out of the Shuri line and move through Tsukasan to counterattack the Americans. The relatively strong 22d Independent Infantry Battalion, which had been in reserve throughout most of the fighting in April and May, was directed to hold the Shuri front in place of the division. The orders to General Fujioka were "to annihilate the enemy rushing from the Yonabaru area." Failing this, the division was at least to stop the American advance long enough to allow the main body of the Thirty-second Army to retire. In order to gain time to organize the new positions, the holding force left on the Shuri front was to fight on until 31 May. Withdrawing units were to leave behind strong rearguards which would defend a line along the Kokuba Gawa to the hills north of Tsukasan and Chan and then south through Karadera to the east coast until the night of 2 June. Then a second line centered on Tomusu, approximately 2,000 yards farther south, would be held until the night of 4 June. By that time the Thirty-second Army would be firmly set up within its Itoman-Yunagusuku-Gushichan outpost zone. Admiral Ota's naval force was directed to hold the west flank of the withdrawal corridor and begin its own retreat when ordered by 32nd Army. During the night, Admiral Ugaki initiated his seventh mass Kikisui attack, launching 165 kamikaze aircraft that inflicted only light damage on landing craft.

On May 24, while engineers constructed a bridge over the Asato River to facilitate vehicle movement, the 4th Marines suffered heavy casualties as they attempted to advance through the muddy, flooded valley and low clay hills. Simultaneously, Shepherd’s Reconnaissance Company crossed the lower Asato and roamed the streets of northwestern Naha without encountering any resistance. To the east, Dill’s 1st Battalion faced a brutal counterattack that inflicted significant casualties and nearly drove the Americans from Oboe Hill. Following Ushijima’s directives, the 32nd and 184th Regiments began to encounter increasing resistance as they sought to expand their control over the valley and the high ground to the south. This culminated in a series of aggressive nighttime counterattacks that ultimately slowed and halted the western advance of the 7th Division. During the night, Japanese forces conducted heavy raids on American airfields at Kadena, Yontan, and Iejima. However, these attacks were merely a diversion for Operation Gi-Gou, a suicide raid against Kadena and Yontan. In this operation, twelve Ki-21 heavy bombers, carrying Giretsu Kuteitai special airborne assault troops, aimed to crash land on the airfields to deploy commandos tasked with destroying aircraft stationed there. 

After the start of B-29 attacks on Tokyo from bases in the Mariana Islands, the 1st Raiding Brigade of the Teishin Shudan was ordered to form a commando unit for a "special operations" mission to attack and destroy the bombers on the Aslito Airfield on Saipan. Captain Okuyama Michiro, commander of the brigade's engineering company and trained in sabotage and demolition was selected as mission leader. He selected an additional 126 men from his own team, the 4th Company of the 1st Raiding Regiment, to form the first Giretsu Airborne Unit. It was initially organized with a command section and five platoons and one independent squad, based at the Imperial Japanese Army's air academy at Saitama. The group unit also included eight intelligence officers and two radio men from the Nakano School. Giretsu operations were to be undertaken at night, beginning with air strikes by bombers. After this, commando units would be inserted onto the target airfield by crash landing their transports. The fact that there was no provision for extraction of the strike force, along with the rejection of surrender in Japanese military doctrine at the time, meant that the Giretsu ground operations were effectively suicide attacks. Though the Saipan attack was eventually cancelled, the 6th Air Army ultimately requested the deployment of the Giretsu Special Forces to neutralize the Okinawa airfields. The 6th Air Army accordingly began preparations for the attack in early May. Led by Captain Okuyama, the raid force moved from Nishitsukuba to Kumamoto as it continued to prepare for the assault, codenamed Operation Gi-Gou. Aircraft for the raid came from the 3rd Independent Air Unit based in the vicinity of Hamamatsu. The raid force consisted of 120 commandos broken up into a headquarters section and five flights, each containing twenty men. They were to be transported by twelve Mitsubishi Ki-21s stripped of their guns and with additional forward and rear exits added to assist raiders with exiting. The timing of the raid was also meant to coincide with the withdrawal of the 32nd Army from the Shuri Line in southern Okinawa. Of the twelve bombers dispatched, four encountered engine trouble and returned to base, while three were intercepted by American night fighters en route to Okinawa. The remaining five Ki-21 bombers approached Yontan Airfield at low altitude and engaged Marine anti-aircraft gunners from the 1st Provisional Anti-aircraft Artillery Group. As a result, four of the bombers were shot down or crash-landed; however, a small number of Giretsu commandos survived this wave and commenced their mission to attack aircraft on the airfield.

The fifth bomber, however, successfully evaded anti-aircraft fire and belly-landed approximately 100 meters from the control tower. About 10 commandos disembarked and attacked aircraft and air personnel with grenades. In the ensuing chaos, the Japanese commandos killed two Americans, wounded 18, destroyed nine aircraft, damaged 29 more, and set a fuel dump ablaze, destroying 70,000 gallons of aviation gasoline. After twelve hours of mayhem, however, American troops hunted down the commandos and exterminated them to a man. Despite this partial success, the Japanese operation occurred against a backdrop of heavy losses, with American fighters and anti-aircraft fire claiming a total of 150 Japanese planes on May 24. During the course of three days, Ugaki committed a total of 387 Navy planes and 174 Army planes to his kamikaze attacks, which continued through May 25. These attacks successfully sank the destroyer Bates, one transport, and one landing craft, while further damaging two destroyers, one destroyer minesweeper, one minesweeper, one transport, and one Liberty ship. On the same day, Admiral Rawlings’ Task Force 57 launched its final strikes in the Okinawa area before retiring late on May 25, having completed the Royal Navy’s Iceberg mission.

On land, while Shepherd’s Reconnaissance Company occupied the deserted ruins of Naha, the 4th Marines fought to seize Machisi Ridge and continued pushing into the eastern outskirts of Naha. However, across the remainder of the 10th Army front, assault units struggled to make progress due to the havoc wreaked by the rain and the stiffened Japanese resistance. That night, in accordance with the withdrawal plan, the 62nd Division began moving its remaining 3,000 men to counter the advance of the 7th Division, hoping to delay the American advance long enough for the main body of the 32nd Army to retreat.

The arrival of additional forces on the Ozato-Mura front had little significant impact, primarily serving to strengthen the covering and holding force. On May 26, the 184th Regiment successfully cleared the Hemlock-Locust Hill Escarpment. Meanwhile, the 32nd Regiment was brought nearly to a standstill in front of the Japanese defensive line across the Yonabaru valley. Looking west, Del Valle’s Marines observed large numbers of enemy troops withdrawing from Shuri and were able to pinpoint their location for naval guns, artillery, and aircraft to bombard. However, despite penetrating the Shuri defensive line on both flanks, the day yielded minimal progress. At sea, further kamikaze attacks caused damage to one destroyer, one destroyer minesweeper, and a subchaser. In total, Ugaki’s raids over the past three days resulted in the deaths of 103 sailors. 

Believing the fast carriers’ continued value off Okinawa had become dubious, back on May 18 Mitscher had requested that TF 58 be relieved from its Okinawa station. Spruance regretfully declined. A week later an increasingly weary Mitscher reported: “For two and a half months [Task Force 58] operated daily in a 60nm square area East of Okinawa, less than 350nm from Kyushu. This was necessitated by the restricted area available and the necessity for being able to cover [the] Amami Gunto airfields, intercept air raids before they could reach Okinawa, and still furnish air support to ground forces. There was no other location from which all these things could be done.” Reflecting on the months of unrelenting stress, tedium, and fatigue, TG 58.1’s screen commander, Captain Tom Hederman, signaled Rear Admiral J.J. Jocko Clark: “See Hebrews 13, verse 8.” Consulting his Bible aboard Hornet, Clark read: “Jesus Christ the same yesterday, and today, and forever.” Amused, Clark forwarded the verse to his entire Task Group, adding, “No disrespect intended.” Clark then signaled Mitscher, “What the hell are we doing out here, anyway?” Mitscher’s response: “We are a highspeed stationary target for the Japanese air force.” Indeed, TF 58 had already suffered over 2,000 Iceberg fatalities.

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The brutal Battle of Okinawa was reaching a critical point as General Buckner's forces pressed against fierce Japanese defenses. Struggles unfolded over Sugar Loaf Hill and Wana Ridge, with Marines suffering heavy casualties but slowly gaining ground. By late May, the dire situation prompted Japanese commanders to plan a retreat to more defensible positions as American forces closed in. Despite challenging conditions, the Allies pushed forward, marking a decisive breakthrough in the Pacific War.