Last time we spoke about the fall of Shuri. In the unforgiving terrain of Okinawa during May 1945, American Marines confronted fierce resistance from entrenched Japanese forces. Amidst heavy rain and dwindling supplies, General Buckner’s 10th Army battled uphill toward Shuri, a critical stronghold. With communication crumbling and morale wavering, the Americans pressed on, launching daring patrols. The situation reached a turning point when intelligence revealed the Japanese withdrawal plans. Buckner ordered continuous pressure, leading to the capture of significant strategic points like Shuri Castle, which was relentlessly bombarded prior to the Marine assault. On May 29, as the last remnants of Japanese forces fled south, American soldiers swept through Shuri, which lay in utter ruin, a testament to the devastating power of the campaign. 

This episode is the Liberation of Mindanao

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. 

Last week we covered the fall of Shuri and today we continue the brutal brawl for Okinawa and the liberation of Mindanao.

As we last saw, the Japanese retreat from the Shuri line opened the path for General Buckner’s 10th Army to move southward, with only General Fujioka’s 62nd Division and a few minor rearguards standing in their way. On June 3, General Arnold’s 7th Division continued its offensive to the south. Colonel Pachler’s 17th Regiment successfully secured the area of Itokazu. Meanwhile, Colonel Green’s 184th Regiment pushed toward the coast to completely cut off the Chinen Peninsula. Colonel Finn’s 32nd Regiment was diverted into the rugged hills nearby to clean up any remaining resistance. To the west, despite persistent bad weather and challenging supply conditions, General Bradley’s 96th Division also achieved success. Colonel May’s 383rd Regiment secured the locations of Kamizato and Tera against relatively light resistance. At the same time, Colonel Halloran’s 381st Regiment advanced to seize the entire Inasomi area. Looking northwest, General Del Valle’s 1st Marine Division encountered stronger opposition. The bulk of the 5th Marines managed to push only as far as Tsukasa before being pinned down. In a strategic move, Colonel Griebel’s 2nd Battalion executed a wide swing through May’s rear area to capture the Gisushi region. Colonel Snedeker’s 7th Marines made steady progress through the Kokuba Valley, facing small enemy blocking forces, in order to extend the line held by the 5th Marines. Meanwhile, at sea, Admiral Ugaki launched his 9th mass Kikisui attack. This operation, featuring just 50 kamikaze aircraft, faced heavy obstacles due to Typhoon Viper but still managed to damage 2 vessels. In another development, after successfully occupying Torishima Island on May 12, Colonel Clarence Wallace’s 8th Marines landed on Iheyajima without encountering any opposition. In addition, preparations for the shore-to-shore assault of General Shepherd’s 6th Marine Division were completed. Colonel Shapley’s 4th Marines were set to land on the Nishikoku beaches before securing the Oroku Peninsula and its airfield. Consequently, during the early hours of June 4, Shepherd’s Reconnaissance Company successfully assaulted Ono-Yama Island, while Shapley’s assault battalions began the shore-to-shore movement to Nishikoku under the cover of artillery and naval bombardment. Despite some mechanical failures on the LVTs, the Marines successfully landed at 06:00 under sporadic machine-gun fire and then pushed onto the high ground 300 yards inland against minor resistance. After securing the initial foothold, the attack slowed against increasing resistance on the left flank. Because of this, the reserve 3rd Battalion was landed at 08:45 and subsequently advanced to the edge of the airdrome. 

During the day development of the enemy's defense had revealed an inordinate number of automatic weapons, ranging in various calibers up to 40mm. Subsequently, it was disclosed that the Japanese had stripped the armament from the air defenses and damaged aircraft in the area and integrated these weapons into the ground fortifications to stiffen materially the resistance on Oroku. Besides meeting with the most extensive mine fields yet encountered during the campaign, on this day the 6th Division had its first contact with an awesome weapon: an 8-inch rocket that exploded with terrific concussion. However, there was little fragmentation and accuracy was poor. While the noise the huge projectiles made, tumbling through the air end over end, sounded "like a locomotive from hell" to the troops, the rockets were mainly a source of annoyance and caused few casualties. Rockets continued to fall in the rear areas during the night, snipers and infiltrators were active, and the entire front came under intermittent heavy mortar fire. This landing allowed Shepherd to bring in Colonel Whaling’s 29th Marines by midday, which then secured the Kikibana area of Naha Bay, while the 4th Marines captured one-third of Naha’s airfield. To the east, the Americans encountered less resistance than before, as the 62nd Division and other minor rearguards completed their withdrawal from the intermediate lines south of Shuri to a reserve area south of the new Kiyamu Peninsula lines. Recognizing this change, Buckner shifted the corps boundary to the west, assigning General Geiger’s 3rd Amphibious Corps the task of isolating the Oroku Peninsula and occupying the Itoman-Kunishi sector, while General Hodge’s 24th Corps advanced toward the Yaeju Dake-Yuza Dake escarpment. 

As a result, the 7th Marines were able to move south to seize Takanyuta and isolate Admiral Ota's forces on the Oroku Peninsula. The atrocious weather had converted the already muddy roads to impassable morasses. Transport was hopelessly mired north of the Kokuba Gawa. South of the river the "trails were only negotiable by foot troops, vehicles could not have been used" even if it had been possible to bring them across the inlet. The 5th Marines managed to secure the Hill 107 area without opposition before being relieved by Colonel Mason’s 1st Marines. However, the 1st Marines were unable to continue their push south toward Shindawaku Ridge due to a flooded stream. Meanwhile, Mason’s 3rd Battalion attempted a wide envelopment through the 96th Division zone but was quickly halted in front of Tera. Food was scarce, but through the wholehearted cooperation of the 96th Division the Marines procured two meals of K rations per man. It was the considered opinion of at least one member of 3/1 that "this day probably was the most miserable spent on Okinawa by men of this battalion." To compound these problems and discomforts, the 3d Battalion also found itself without a supply route or communications with the regiment 11,000 yards to the rear.

Further east, the 383rd Regiment advanced rapidly, engaging isolated but strong enemy delaying groups as they secured the outskirts of Iwa. Matching this progress, the 381st Regiment advanced all the way to the hills north of Aragusuku, facing steadily increasing resistance. Additionally, while the 17th Regiment established positions controlling the Minatoga-Meka road, the 184th Regiment advanced against patchy and ineffective resistance until the Minatoga area was secured. The following morning, Admiral McCain’s Task Force 38 launched strikes on Okinawa and Kyushu. Unfortunately, poor situational awareness from Admiral Halsey caused the 3rd Fleet to inadvertently enter Typhoon Viper. This storm inflicted varying degrees of damage to four carriers, two escort carriers, three cruisers, one destroyer, and one tanker, while also destroying 76 planes. Additionally, kamikaze attacks succeeded in damaging the battleship Mississippi and heavy cruiser Louisville. Back on Okinawa, Shepherd’s attack on the Oroku Peninsula commenced and progressed slowly but steadily against uniformly stubborn resistance. The 4th Marines secured most of the airfield and the Toma high ground, while the 29th Marines fought laboriously to advance toward Mura and Oroku, gaining up to 1,000 yards.

To the east, the 7th Marines advanced to positions just north of Hanja, while the 1st Marines bypassed the inundated area in front of them by swinging east and following their 3rd Battalion toward Iwa. In fact, Mason’s 3rd Battalion launched another attack aimed at Shindawaku Ridge, advancing over 3,000 yards to the area west of Iwa. Despite muddy conditions and rainy weather, Hodge’s infantrymen continued to penetrate the enemy outpost zone, developing the edges of the main Japanese battle position. The outpost line of Kiyamu Peninsula was fully manned on June 4. Japanese Army headquarters estimated that the strength of its now concentrated forces totaled 30000, distributed as follows: 24th Division and attached units, 12000; 62nd Division and attached units, 7000; 44th IMB and attached units, 3000; 5th Artillery Command and attached units, 3000; and units directly under 32nd Army command, 5000. The difference in total strength between the 50000-man estimate late in May and the 30000 left in Kiyamu Peninsula was attributed to "attrition during retirement operations." Only about 20% of the remaining troo