Last time we spoke about the Visayas Offensive. In March 1945, the Pacific War raged on. On Iwo Jima, the US Marines, after intense fighting and heavy casualties, declared the island secured. Meanwhile, in northern Luzon, General Clarkson's division advanced towards Baguio, facing fierce Japanese resistance, while General Mullins pushed through Balete Pass. The Japanese army, grappling with severe supply shortages, was forced to evacuate Baguio. In the Visayas, General Eichelberger's forces...
Last time we spoke about the Visayas Offensive. In March 1945, the Pacific War raged on. On Iwo Jima, the US Marines, after intense fighting and heavy casualties, declared the island secured. Meanwhile, in northern Luzon, General Clarkson's division advanced towards Baguio, facing fierce Japanese resistance, while General Mullins pushed through Balete Pass. The Japanese army, grappling with severe supply shortages, was forced to evacuate Baguio. In the Visayas, General Eichelberger's forces targeted the Sulu Archipelago and Central Visayan Islands, securing key airfields. The 40th Division landed on Panay, capturing Iloilo, and launched an assault on northern Negros. On Cebu, the Americal Division landed near Talisay, encountering mines but minimal resistance, and secured Cebu City. By April, Allied forces had made strategic advances across the Philippines, overcoming Japanese resistance and establishing crucial airfields.
This episode is the Invasion of 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.
We have come to the grand final battlefield at last, that of Okinawa. Of course battles are raging in all sorts of other theaters like New Guinea, China, Burma, etc. However as you might imagine its becoming impossible given the week by week format to cover all of this in single episodes. So we are going to hardcore focus on Okinawa for awhile, we will circle back to the other theaters to catch up. Seriously it was the only logical way to do this and honestly in retrospect I wish the entire podcast was campaign by campaign instead of week by week. But I am a mere podcaster following the youtube series of this. But if you want to hear a campaign by campaign series, over at Echoes of War me and my cohost Gaurav are beginning to roll them out. The first series will be the entire Malayan Campaign, and I think after that I might try to do the Philippines. Regardless lets jump into the invasion of Okinawa.
As previously noted, the directive issued by the Joint Chiefs of Staff on October 3 designated Okinawa as the final target for invasion, following the establishment of air and naval bases in Luzon and Iwo Jima. Capturing this crucial island would bring the conflict to Japan's doorstep, disrupt the enemy's air communications through the Ryukyu Islands, and flank their maritime routes to the south. Consequently, from these newly established air and naval bases in the Ryukyus, American forces would be able to launch attacks on Japan's main islands and implement a more rigorous sea and air blockade, isolating them from Japanese territories to the south. This made it imperative for the Japanese Empire to maintain control over Okinawa and the Ryukyus. To this end, the 32nd Army, led by Lieutenant-General Watanabe Masao, was formed there by late March 1944. Initially, it comprised four companies and one artillery regiment stationed at Amami Oshima; five companies and one artillery regiment at Nakagusuku Bay; four companies and one artillery regiment at Iriomote Island; along with various garrison units from the 19th Air District in Okinawa.
Under Operation Tei-Go, the Ryukyus and Formosa were to form a long zone of interprotective air bases. These bases were expected to defeat any American sea or air forces sent into the region. To avoid destruction from the air, each base was to consist of a cluster of airfields, such that if one were damaged others could be used immediately. Military and civilian crews were promptly set to work building the numerous fields. 13 base clusters had to be created, stretching in a line from Tachiarai in the northern Ryukyus to Pingting on Formosa in the south. The only remaining tasks for ground forces were the defense of these facilities and their support anchorages and the unenviable work of building the fields. Much of the energy of 32nd Army would be absorbed building these air facilities. This was more difficult since 32nd Army had only two bulldozers and one earth roller. Japan had produced dozers in small numbers at its Komatsu plant since 1943, but few had reached the front. Since soldiers were thus obliged to use shovels, hoes, straw baskets, and horse-drawn wagons, construction was slow. Moreover, because of enemy submarine raiders, it was impossible for the Japanese to deliver the large quantities of fuel, ammunition, and anti-aircraft guns needed to operate the bases. Even more seriously, the planes themselves were not available.
Between April and June, the 32nd Army received reinforcements, including the 44th and 45th Independent Mixed Brigades, the 21st Independent Mixed Regiment, and the 27th Independent Anti-Aircraft Artillery Battalion, among other air garrison units. From these forces, Watanabe chose to send the 45th Brigade to establish bases on Miyako Island and Ishigaki Island, while the 21st Regiment was tasked with setting up a base on Tokunoshima. On June 27, the 1st and 2nd Infantry Corps (approx. 4100 men) boarded the Toyama Maru and began the voyage to Okinawa. The 44th Brigade HQ, Artillery and Engineer Units meanwhile boarded other vessels of the Taka-412 convoy. Two days later, while the convoy was sailing east of Tokunoshima, the submarine Sturgeon successfully sank the Toyama Maru with two torpedoes, therefore inflicting the loss of 3724 men and much heavy equipment. Because of this, the 1st Corps had to be deactivated.
Following the fall of Saipan, the Japanese Empire rapidly deployed significant ground forces to the 32nd Army, including the 9th, 24th, 28th, and 62nd Divisions, as well as the 59th, 60th, and 64th Independent Mixed Brigades, and the 27th Tank Regiment. Additionally, the 15th Independent Mixed Regiment was airlifted to bolster the beleaguered 44th Brigade, which was reorganizing its 2nd Corps with local recruits. The 32nd Army Staff wished to use as much of the indigenous population as it could in direct support of the war effort, so on January 1 1945 it ordered total mobilization. All Okinawan males aged 18 to 45 were obliged to enter the Japanese service. 39000 were drafted, of whom 15000 were used as nonuniformed laborers and 24000 as rear-echelon troops called the Home Guard (Boeitai). Many of the Boeitai replaced sea based battalions and rear-area supply units that had been reorganized and equipped for frontline duty. In addition to these, 1500 of the senior boys of the middle schools on Okinawa were organized into Iron and Blood Volunteer Units and assigned to frontline duty. Some of these students had been tried out in the signal service in the autumn of 1944 with good results, so the program was expanded. Since the fall of 1944, 600 senior students of the girls' middle schools also had been given training in the medical service.
While most of these troops were sent to strengthen the main defenses at Okinawa, a large portion of the 28th Division was actually assigned to reinforce the garrisons on the Miyako and Yaeyama Islands. The 36th Regiment was dispatched to support the Daito Islands, the entire 45th Brigade was moved to garrison Ishigaki and the rest of the Yaeyamas, the 59th Brigade was tasked with defending Irabu Island, the 60th Brigade was sent to reinforce Miyako Island, and the 64th Brigade was deployed to the Amami Islands. On August 9, Lieutenant-General Ushijima Mitsuru took command of the 32nd Army. His initial strategy was to occupy all of Okinawa with a strong force and eliminate any invading troops at their landing sites. As fierce fighting began at Leyte, intensive training for the troops commenced, including divisional maneuvers at potential American landing points, artillery bombardments of beachheads, and nighttime assaults on bridges. However, on November 13, Tokyo decided to send the elite 9th Division to Formosa to prepare for a movement to the Philippines that ultimately did not occur. The unexpected withdrawal of the 32nd Army’s best division disrupted Ushijima’s operational plans. Ironically, this situation improved combat efficiency, as it compelled the army to achieve more with fewer resources.
Ushijima chose to concentrate most of his forces in the mountainous and easily defensible Shimajiri area, located in the southern part of the island. This strategic location allowed the Japanese to maintain control over Naha port and target the northern airfields with artillery. Similar to the situation in Iwo Jima, this decision marked a departure from the previously favored strategy of a "decisive battle," opting instead for a war of attrition that had proven effective at Peleliu and Iwo Jima. As a result, Ushijima positioned Lieutenant-General Amamiya Tatsumi’s reinforced 24th Division at the southern end of the island, Lieutenant-General Hongo Yoshio’s reinforced 62nd Division along the central isthmus, Major-General Suzuki Shigeji’s reinforced 44th Independent Mixed Brigade on the Hagushi plain, and Colonel Udo Takehiko’s Kunigami Detachment, consisting of two battalions from the 2nd Corps, in northern Okinawa. These troop placements were successfully implemented in December; however, concerns arose that the 32nd Army was spread too thin to effectively counter the anticipated enemy invasion. Consequently, on January 15, Ushijima decided to move the 44th Brigade from the Hagushi plain southward to overlap with the 62nd Division's area on the east, significantly shortening the Japanese front. Additionally, one battalion from the Kunigami Detachment was sent to defend Iejima and its crucial airbase, which necessitated the rest of the unit to consolidate its positions and strengthen defenses on Yaedake Mountain in the Motobu Peninsula. Ushijima also had the support of the brigade-sized 5th Artillery Group, led by Lieutenant-General Wada Kosuke; the 21st Field Anti-Aircraft Artillery Corps; the 11th Shipping Group, which included several shipping engineer regiments and sea-raiding battalions; the 19th Air District overseeing various aviation service units; and Rear-Admiral Ota Minoru’s Okinawa Naval Base Force, which comprised nearly 9,000 personnel stationed at the Oroku Naval Air Base near Naha.
Ushijima had nearly 100,000 troops at his command, with 29,000 assigned to specialized units for anti-aircraft, sea-raiding, and airfield operations. Anticipating the nature of the impending conflict, these well-staffed service units were reorganized for ground combat. The 19th Air District transformed into the 1st Specially Established Regiment, responsible for defending the Yontan and Kadena airfields it had recently constructed and maintained. Most of the service personnel were integrated into the new 1st Specially Established Brigade in the Naha-Yonabaru area, while the sea-raiding base battalions became independent infantry units. Additionally, the remainder of the 11th Shipping Group was restructured into the 2nd Specially Established Brigade on the southwestern part of Okinawa. This reorganization, completed on March 21, bolstered ground combat strength by 14,000 men, leaving only 10,500 of the 67,000 Army personnel in specialized roles. To protect themselves, the Japanese began constructing robust fortifications, tunnels, and cave systems to shield against anticipated enemy bombardments.
Work on the caves was begun with great vigor. "Confidence in victory will be born from strong fortifications" was the soldiers' slogan. The caves meant personal shelter from the fierce bombardments that were sure to come, and they also offered a shimmering hope of victory. The combination was irresistible, and units began to work passionately on their own caves. Enthusiasm was essential because of the great toil it took to create the caves. Just as 32nd Army had only two bulldozers to make airfields, it had no mechanized tunneling equipment at all. Besides lacking cutting equipment, 32nd Army also lacked construction materials. It had no cement, no ironware, and no dynamite. The units had to rely entirely on wooden beams that they obtained themselves to shore up their shafts. This was not necessarily easy because there were no forests in the south of the island where the troops were now stationed. Pine forests were abundant in the mountainous north, however, so each unit was assigned its own lumbering district in the north. Several hundred men from each division were detailed as its lumbering squad. The problem remained, however, of how to move the several million logs that were needed over the 40 or so miles from the forests to the forts. With no railroads and the use of trucks limited by a shortage of gasoline, the solution was for each unit to cut its own logs, then transport them in small native boats called sabenis. The divisions acquired 70 of these, which then plied the waters steadily from north to south. In January 1945, however, the Leyte-based B-24s that began flying over daily for reconnaissance also began strafing the boats. So the waterborne delivery of logs had to be switched from day to night, greatly lowering efficiency.
Ushijima aimed to prolong the fight from these positions and decided to destroy the indefensible Yontan and Kadena airfields to prevent their use by the enemy, effectively ending the ineffective air defense strategy initially devised by Tokyo. Meanwhile, Admirals Nimitz and Spruance were preparing for Operation Iceberg, the invasion of Okinawa. Given the expectation that the capture of Iwo Jima and recent air assaults on Japan would concentrate enemy air power around the Empire's core, which would respond aggressively to any attacks on Okinawa, the Americans needed to first neutralize or eliminate enemy air facilities in the Ryukyus, Kyushu, and Formosa to achieve air superiority over their objective.
As a result, all available carrier-based and land-based air forces were tasked with this operation, including Admiral Mitscher’s Task Force 58, General Kenney’s Far East Air Forces, Admiral Hoover’s Central Pacific Forward Area, and General Arnold’s 20th Air Force. From the 20th Air Force, General LeMay’s 21st Bomber Command was assigned to attack Okinawa before moving on to Kyushu and other vulnerable locations in the home islands. Meanwhile, Brigadier-General Roger Ramey’s 20th Bomber Command, supported by General Chennault’s 14th Air Force, focused on neutralizing Formosa. Aircraft from the Southwest Pacific Area were also set to conduct searches and continuous strikes against Formosa as soon as conditions on Luzon allowed. Additionally, the British carriers of Vice-Admiral Bernard Rawlings’ Task Force 57 were tasked with neutralizing air installations on the Sakishima Group in the ten days leading up to the landings. Once air superiority was achieved, Spruance’s 5th Fleet was to land Lieutenant-General Simon Buckner’s 10th Army, which included Major-General John Hodge’s 24th Corps and Major-General Roy Geiger’s 3rd Amphibious Corps. The 24th Corps comprised the 7th and 96th Divisions, while the 3rd Amphibious Corps included the 1st and 6th Marine Divisions. As the Commanding General of Expeditionary Troops, Buckner also oversaw the 27th and 77th Divisions and the 2nd Marine Division for special operations and reserve purposes. Furthermore, the 81st Division was held in area reserve. In total, Buckner commanded a force of 183,000 troops, with 116,000 designated for the initial landings. The plan called for Major-General Andrew Bruce’s 77th Division to first secure amphibious bases in the Kerama Islands on March 26, with one battalion further securing Keisejima five days later to establish a field artillery group there.
On April 1, following a demonstration by the 2nd Marine Division in southern Okinawa, the main landings were set to take place. The 24th Corps and the 3rd Amphibious Corps would land simultaneously on the west coast beaches north and south of Hagushi. After landing, both corps were to quickly advance across the island, capturing the airfields in their designated areas before securing all of southern and central Okinawa. Subsequently, Buckner’s forces were to invade and secure Iejima and northern Okinawa. Once this was achieved, there were tentative plans to launch an invasion of Kikaijima with the 1st Marine Division and Miyako Island with the 5th Amphibious Corps. For the invasion, Spruance relied on a Covering Force under his command, along with Admiral Turner’s Joint Expeditionary Force. This force included Admiral Blandy’s Amphibious Support Force, which comprised minesweepers, UDTs, and escort carriers; Rear-Admiral Morton Deyo’s Gunfire and Covering Force, consisting of ten battleships and eight heavy cruisers; Rear-Admiral Lawrence Reifsnider’s Northern Attack Force, responsible for landing the 3rd Amphibious Corps; and Rear-Admiral John Hall’s Southern Attack Force, tasked with landing the 24th Corps. Similar to Iwo Jima, Okinawa had endured multiple air attacks since October 1944 as part of the preliminary operations for the landings on Leyte, Luzon, and Iwo Jima that we previously discussed. These operations also included air strikes aimed at neutralizing Japanese air power on Formosa. Throughout February and March, Mitscher’s carriers and LeMay’s B-29s brought the conflict back to the Japanese home islands with a series of strikes that caused significant damage and instilled fear in the population.
On March 1, Task Force 58 launched the first strike of the month against the Ryukyus, targeting Amami, Minami, Kume, Tokuno, and Okino, as well as Okinawa. This operation resulted in the destruction of 41 planes, the sinking of eleven vessels, damage to five others, and significant harm to island facilities. In between the main assaults on Japan, the superfortresses frequently targeted key sites in the Ryukyus, leading the beleaguered Japanese forces to refer to these missions as the "regular run." Throughout March, aircraft from the Southwest Pacific and the Marianas conducted nearly daily operations over the Ryukyus and surrounding waters, searching for Japanese shipping and contributing to the isolation of Okinawa by sinking cargo ships, luggers, and other vessels, while American submarines intensified the blockade around the Ryukyus. Meanwhile, after completing extensive training and rehearsals, Task Forces 51 and 55 gathered at Leyte, Task Force 53 assembled in the Guadalcanal-Russells area, and the rest of the 5th Fleet convened at Ulithi. On March 12, Reifsneider’s convoy, carrying the 3rd Amphibious Corps, was the first to depart, successfully reaching Ulithi nine days later. On March 18, the tractor group transporting the 77th Division began its journey from Leyte to the Kerama Islands. On the same day, Mitscher’s carriers targeted 45 airfields in Kyushu, claiming the destruction of 102 Japanese planes, damaging or destroying 275 on the ground, sinking six vessels, and damaging three more. In response, Admiral Ugaki’s 5th Air Fleet launched a counterattack against the carriers Enterprise, Intrepid, and Yorktown, inflicting minor damage while losing 33 aircraft.
The next morning, after locating the majority of the Combined Fleet at Kure, Mitscher dispatched 436 aircraft to target naval installations and shore facilities in the Inland Sea. At 06:50 three C6N Saiun “Myrt” recon planes discovered Task Force 58, and by 07:00 Captain Genda Minoru’s elite, handpicked 343rd Kokutai had scrambled 63 advanced Kawasaki N1K2-J “George” Shiden-Kai fighters from Shikoku to intercept the Americans. Minutes later, Genda’s powerful Shiden-Kais “waded into the Hellcats and Corsairs as if the clock had been turned back to 1942.” Soon the 343rd Kokutai was engaged in a wild maelstrom with 80 US fighters, including VF-17 and VBF-17 Hellcats from Hornet and VMF-112 Corsairs from Bennington. For once the Japanese broke about even, losing 24 fighters and one scout plane to the Americans’ 14 fighters and 11 bombers. Nevertheless, Genda’s expert but outnumbered 343rd Kokutai proved unable to blunt the American onslaught.
Despite facing a formidable intercepting force, they managed to inflict damage on 18 Japanese warships, including the battleships Yamato, Ise, Hyuga, and Haruna, as well as six aircraft carriers. Additionally, one incomplete submarine was destroyed, 97 enemy planes were shot down, and 225 were either destroyed or damaged at Japanese airfields. In response, Ugaki launched a kamikaze counterattack that successfully struck the carriers Wasp and Franklin, causing significant damage and forcing Franklin to head to Pearl Harbor immediately. As Task Force 58 slowly withdrew the afternoon of March 20, a damaged Zero crashed destroyer Halsey Powell, killing 12 and wounding 29. Shortly afterwards friendly anti-aircraft fire started fires aboard Enterprise. At 23:00 eight Japanese torpedo planes unsuccessfully attacked the carriers, while three overnight snoopers were splashed by anti-aircraft fire. Between March 17 and March 20 Ugaki had committed 193 aircraft to battle and lost 161. On March 21 Ugaki dispatched a 48-plane strike, including 16 G4M “Betty” bombers, carrying the very first Ohka (“Cherry Blossom”) suicide missiles. However the combat air patrol (CAP) of 150 Hellcats and Corsairs repulsed them. Franklin, Wasp, and Enterprise, all damaged, steamed to Ulithi as a reorganized Task Group 58.2. Except for April 8–17, when Task Group-58.2 was briefly reestablished, Task Force 58 strength would remain at three Task Groups throughout Iceberg’s duration. Ugaki’s 5th Air Fleet was meanwhile effectively incapacitated for several weeks, but Ugaki nevertheless reported five carriers, two battleships, and three cruisers sunk, which IGHQ found scarcely credible.
Meanwhile, the Mine Flotilla departed Ulithi on March 19, followed two days later by the rest of Task Force 52 and Task Force 54 to support the Kerama operation. On March 23, to prepare for the imminent minesweeping operations of Iceberg, Task Force 58 conducted extensive bombing raids on all known installations in Okinawa, resulting in significant damage and the sinking of 24 vessels and damage to three others over the following five days. Furthermore, Admiral Lee's battleships traversed the cleared area and opened fire on Okinawa, sinking an additional two vessels. With this naval and air support, Blandy’s minesweepers and UDTs successfully cleared the route for Rear-Admiral Ingolf Kiland’s Western Islands Attack Group by nightfall on March 25. Their primary opposition in the following two days consisted of a series of kamikaze attacks, which caused damage to the battleship Nevada, light cruiser Biloxi, four destroyers, two destroyer minelayers, one minesweeper, and two transports, while the destroyer Halligan was sunk by mines.
The next morning, supported by naval gunfire and carrier aircraft, Bruce initiated his first landings. The 3rd Battalion, 305th Regiment landed on the southern beaches of Aka Island, facing sporadic resistance. Meanwhile, the 1st Battalion, 306th Regiment landed unopposed on Geruma Island, which was quickly secured. The 2nd Battalion, 306th Regiment achieved even faster success at Hokaji Island, while the 1st Battalion, 305th Regiment invaded Zamami Island with light resistance. The 2nd Battalion, 307th Regiment encountered minor opposition as it took Yakabi Island. The Fleet Marine Force Amphibious Reconnaissance Battalion scouted Keisejima and found no enemy presence.
After encountering some resistance, the units on Aka and Zamami pushed back the enemy garrisons, securing two-thirds of Aka by nightfall and successfully repelling a strong counterattack on Zamami that night. Simultaneously, Deyo’s warships and Blandy’s carriers began bombarding the demonstration beaches, while minesweepers cleared progressively larger areas around Okinawa, although the minesweeper Skylark was sunk by mines. By March 27, the remaining enemy forces on Aka and Zamami were finally eliminated, and a company took Amuro Island without opposition. Additionally, a company from the 307th moved to Kuba Island, which was quickly secured.
At the same time, Bruce continued his main landings, with the 1st and 2nd Battalions of the 306th Regiment landing on the west coast of Tokashiki Island, facing minimal opposition. As the two battalions advanced north along narrow trails toward Tokashiki town, the 3rd Battalion landed to secure the southern part of the island. On March 28, they reached the town, clearing the entire island and concluding the Kerama operation.
In Kerama, "Island Chain between Happiness and Good," the Japanese tradition of self-destruction emerged horribly in the last acts of soldiers and civilians trapped in the hills. Camping for the night of March 28 a mile from the north tip of Tokashiki, troops of the 306th heard explosions and screams of pain in the distance. In the morning they found a small valley littered with more than 150 dead and dying Japanese, most of them civilians. Fathers had systematically throttled each member of their families and then disemboweled themselves with knives or hand grenades. Under one blanket lay a father, two small children, a grandfather, and a grandmother, all strangled by cloth ropes. Soldiers and medics did what they could. The natives, who had been told that the invading "barbarians" would kill and rape, watched with amazement as the Americans provided food and medical care; an old man who had killed his daughter wept in bitter remorse. Only a minority of the Japanese, however, were suicides. Most civilians straggled into American positions, worn and dirty. In all, the 77th took 1,195 civilian and 121 military prisoners. This operation resulted in the deaths of 530 Japanese soldiers, 121 captured, and the neutralization of over 350 suicide boats, with American losses totaling 31 killed and 81 wounded.
While this initial operation was underway, the tractor groups of the Southern and Northern Attack Forces left their staging areas in Luzon and Ulithi on March 25, followed by the rest of Spruance’s fleet two days later. On March 26 and 27, Rawlings’ Task Force 57 conducted a series of strikes on the Sakishima Islands, primarily targeting Miyako. Meanwhile, after a 250-plane raid on the Mitsubishi plant in Nagoya on March 24, LeMay sent 165 B-29s from the 73rd and 314th Bombardment Wings to attack the Kyushu airfields on March 27, facing minimal resistance as they caused significant damage to the Tachiarai Army Airfield, the Oita Naval Airfield, and the Omura aircraft plant. Other bombers from the 313th Bombardment Wing laid aerial mines in the Shimonoseki Strait. The Japanese responded with a raid on Spruance’s naval units using aircraft and suicide boats on the night of March 28, resulting in one LCM being destroyed and one cargo ship damaged. On March 29, Mitscher launched another strike against Kyushu, but poor weather conditions led to only minor damage, with 12 vessels sunk and one damaged. By this point, the “largest assault sweep operation ever executed” had cleared the Hagushi beach approaches in 75 sweeps, with minesweepers clearing 3,000 square miles of coastal waters. The following morning, as Task Force 58 once again targeted Okinawa, Deyo’s ten battleships and eleven cruisers advanced to bombard Okinawa’s defenses and demolish coastal seawalls with increased intensity. At the same time, the 314th sent 12 planes to attack the Mitsubishi engine works in Nagoya overnight. The next day, LeMay dispatched 152 B-29s for his second assault on Kyushu, completely destroying the Tachiarai machine works and heavily damaging the Omura airstrip.
On March 31, back in Okinawa, the final underwater demolition operation off the Hagushi beaches was underway while the 420th Field Artillery Group was successfully positioned on Keisejima, prompting a strong reaction from Ushijima’s artillery. That morning, a Ki-43 fighter crashed into Admiral Spruance’s flagship, the Indianapolis, resulting in the deaths of nine crew members and severely damaging a shaft, which ultimately compelled Spruance to transfer his flag to the battleship New Mexico. Meanwhile, the frogmen completed their last demolition operations at Hagushi, and the final preliminary bombardment of Okinawa and the Sakishima Islands was executed successfully. By the end of the month, over 13,000 large-caliber shells had been fired in the shore bombardment, and approximately 3,095 sorties had been conducted against the Ryukyus. However, effective Japanese concealment prevented significant damage to Ushijima’s defenses. As night fell, a vast fleet of transports, cargo ships, landing craft, and warships navigated the final miles of their long journey, successfully meeting off the Hagushi beaches in the East China Sea before dawn on April 1. While Turner’s forces prepared for the landing, a fire support group consisting of 10 battleships, 9 cruisers, 23 destroyers, and 177 gunboats began the pre-landing bombardment of the beaches at 05:30, firing a total of 44,825 rounds of shells, 33,000 rockets, and 22,500 mortar shells. In response, the Japanese launched some scattered kamikaze attacks on the convoys, successfully hitting the transport Hinsdale and LST 884. At 07:45, carrier planes from Task Force 58 and Blandy’s carriers targeted the beaches and nearby trenches with napalm. Fifteen minutes later, the first wave of amphibious tanks advanced toward the shore at four knots, followed closely by five to seven waves of assault troops in amphibious tractors.
Alongside the primary landings, Major-General Thomas Watson's 2nd Marine Division staged a feigned landing on the southeast coast of Okinawa, near Minatoga, aiming to distract the enemy's reserves in that region. Meanwhile, on the main front, supported by rocket fire from LCI gunboats and artillery fire from Keisejima, a nearly continuous line of landing craft advanced toward the beaches at 08:20. Encountering no resistance, the first waves began to land on their designated beaches at 08:30, with additional troops following closely behind. Within an hour, Geiger’s 3rd Amphibious Corps had successfully landed the assault elements of the 6th and 1st Marine Divisions north of the Bishi River, while Hodge’s 24th Corps disembarked the 7th and 96th Divisions to the south of the river. The lack of significant opposition, coupled with the rapid disintegration of the untrained 5473 airfield service troops of the 1st Specially Established Regiment under heavy air and artillery bombardment, created a sense of foreboding among the men, prompting them to scout the area cautiously. As before, the enemy's primary response consisted of kamikaze attacks on naval units, resulting in damage to the battleships West Virginia and Tennessee, the British carrier Indefatigable, destroyers Prichett and Vammen, the British destroyer Ulster, the destroyer minelayer Adams, and four other vessels. Returning to Okinawa, after ensuring they were not walking into a trap, the troops began advancing inland while tanks and other support units were brought to the beaches.
In the north, Major-General Lemuel Shepherd’s 6th Marine Division deployed Colonel Merlin Schneider’s 22nd Marines on the isolated Green Beaches and Colonel Alan Shapley’s 4th Marines on the Red Beaches near Yontan Airfield. The 4th Marines advanced toward Yontan, encountering only scattered resistance, and quickly secured the objective east of the airfield by 13:00. Meanwhile, Schneider’s 3rd Battalion moved through Hanza without opposition, but the 2nd Battalion's progress was hindered as it needed to protect its exposed flank, prompting the 22nd Marines to quickly commit its reserve battalion to maintain their momentum. To the south, Major-General Pedro Del Valle’s 1st Marine Division landed Colonel Edward Snedeker’s 7th Marines on the Blue Beaches and Colonel John Griebel’s 5th Marines on the Yellow Beaches just north of the Bishi River. By 09:45, the 7th Marines on the left had advanced through the village of Sobe, their primary objective, while the 5th Marines were positioned 1,000 yards inland. At this point, it was decided to land the reserve battalions of both regiments, along with Colonel Kenneth Chappell’s 1st Marines. With forces arranged in depth and reserves positioned to the right and left, Del Valle’s units continued to advance steadily over the rolling terrain as the 11th and 15th Marines artillery units were also being landed. At 13:30, the 4th Marines resumed their advance, facing light resistance on the left but becoming overextended on the right while trying to maintain contact with the 7th Marines. As a result, Shapley landed his reserve battalion to fill this gap, while Shepherd also deployed his reserve 1st Battalion, 29th Marines, to secure the critical northern flank, allowing the 22nd Marines to keep advancing eastward.
Meanwhile, further south, Major-General Archibald Arnold’s 7th Division disembarked Colonel Frank Pachler’s 17th Regiment on the Purple Beaches just south of the Bishi River and Colonel John Finn’s 32nd Regiment on the Orange Beaches in front of Kadena Airfield. Both regiments quickly ascended the gentle hills at the landing sites and began advancing eastward. By 10:00, the 27th Regiment had patrols at Kadena Airfield, which was discovered to be empty; by 10:30, the front line was crossing the airstrip. Moments later, it advanced 200 yards beyond, heading towards Cholon. Simultaneously, the 32nd Regiment secured the southwestern edge of Kadena and continued along the road to Kozo. To the south, Major-General James Bradley’s 96th Division landed Colonel Michael Halloran’s 381st Regiment on the White Beaches in front of Sunabe and Colonel Edwin May’s 383rd Regiment on the Brown Beaches at the extreme southern flank. Both regiments moved eastward with the same ease as the other units that day, making significant progress towards Momobaru in the north and successfully capturing Chatan in the south. Additionally, all divisional artillery of the 24th Corps landed early; Hodge’s reserve regiments and battalions were successfully brought ashore, and by nightfall, direct-support battalions were in position. By the end of the day, over 60,000 men had landed, suffering only 28 dead, 27 missing, and 104 wounded, thereby establishing a beachhead 15,000 yards long and up to 5,000 yards deep in some areas.
Shepherd’s Marines paused for the night along a line stretching from Irammiya to the division boundary south of Makibaru, which the 1st Marine Division extended further south to Kadena. Meanwhile, the 7th Division advanced nearly three miles inland, destroying several pillboxes but losing three tanks to mines. The 96th Division secured positions along the river south of Chatan, on the elevated ground northwest of Futema, in the outskirts of Momobaru, and in the hills to the northwest and southwest of Shido. Although there were gaps in the lines in several areas, they were filled by reserve units or weaponry before nightfall. Thus, the Battle of Okinawa, seen by most as the final climactic battle of the Pacific War has only just begun.
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As Gandalf the White once said “The board is set, the pieces are moving. We come to it at last, the great battle of our time.” The battle of Okinawa will become the bloodiest campaign America has ever fought. The soul crushing journey has just begun as the Americans end the last stand of the Japanese in the Pacific War.
