- 186 - Pacific War Podcast - North Borneo Offensive - June 10 - 17, 1945
Description
Last time we spoke about the Liberation of Mindanao. In the spring of 1945, as the battle for Okinawa intensified, American forces relentlessly confronted entrenched Japanese troops. General Buckner's 10th Army faced fierce resistance amidst harsh weather and dwindling supplies. Despite these challenges, they captured the strategic Shuri Castle, marking a critical turning point as Japanese troops retreated. Simultaneously, the liberation of Mindanao was underway. American troops, under General Eichelberger, rapidly advanced, overcoming fortified Japanese defenses in mountainous terrain. With the 24th Division securing key locations like Digos and Davao, the 31st Division pushed northward against General Morozumi’s forces. Despite stubborn resistance, American forces displayed tenacity and courage, leading to significant victories. By May 20, the Americans approached Malaybalay, where remnants of the 30th Field Artillery Regiment held their ground. As Japanese troops attempted to regroup, they faced relentless assaults from the advancing American divisions. Throughout the campaign, the Americans endured heavy casualties, but their determination led to more than 10,000 Japanese losses.
This episode is the North Borneo Offensive
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 we continue our story, by June 9, General Buckner's forces had pushed through to the enemy's main defensive line on the Kiyamu Peninsula. It was there that General Ushijima was preparing to make his final stand. Meanwhile, General Shepherd’s 6th Marine Division landed on the Oroku Peninsula, determined to dismantle a stubborn pocket held by Admiral Ota’s naval units. On June 10, the pace of the assault quickened dramatically. Colonel Shapley’s 4th Marines broke through enemy defenses, capturing the strategic Hills 58 and 55(2). At the same time, Colonel Roberts’ 22nd Marines secured Hills 28 and 55(1). Although Colonel Whaling's 29th Marines made only limited progress, they effectively identified the last significant pocket of resistance in the high ground west of Oroku village. Looking south, General Del Valle’s 1st Marine Division also reignited its offensive. Colonel Snedeker’s 7th Marines successfully advanced into Itoman and Tera, while Colonel Mason’s 1st Marines, supported by tanks, cleared the southern slopes of the key ridge between Tera and Yuza, capturing Yuza Hill in the process. To the east, General Bradley’s 96th Division launched a renewed attack, bolstered by artillery and tank support. Colonel May’s 383rd Regiment advanced approximately 700 yards toward the town of Yuza. Meanwhile, Colonel Halloran’s 381st Regiment pushed into Yunagusuku and Tomui. However, they faced fierce resistance, quickly encountering heavy machine-gun fire originating from the heights of Yaeju Dake, which halted their advance.
Meanwhile, General Arnold’s 7th Division continued its relentless push toward Nakaza, employing the full might of their tanks and artillery. Colonel Finn’s 32nd Regiment steadily advanced onto the eastern slopes of Hill 95, pressing toward Hanagusuku. At the same time, Colonel Pachler’s 17th Regiment fought to solidify its precarious position on the southeast end of Yaeju Dake. Back at sea, a kamikaze attack tragically sank the destroyer William D. Porter. That same day, Admiral McCain’s Task Force 38 unleashed a barrage of bombs and artillery on Minami Daito Island before retreating to Leyte-Samar after 89 consecutive days off the coast of Okinawa. This marked the conclusion of their role in Operation Iceberg. The following day, the sustained pressure from Arnold's offensive began to fracture General Suzuki’s 44th Independent Mixed Brigade on both flanks.Seas of flame engulfed Hill 95 on 11 June as 1/32 slowly advanced toward the crest of the enemy position behind the jets of armored flame throwers. Flame fuel was pumped and sprayed from hoses over portions of the ridge inaccessible to tanks and then ignited. Infantrymen moved among the still hot and smoking rocks and drove back the surviving defenders. That night the battalion dug in just short of the Hill 95 peak. Although little forward progress was made by 2/32 or the 17th Infantry on 11 June, the enemy position was considerably weakened. Intensive fire from supporting weapons was concentrated against the slopes of Yaeju Dake, and strong patrols cleaned out enemy groups that held positions near the 7th Division front lines. The 32nd Regiment achieved a significant victory by capturing the peak of Hill 95, while the 17th Regiment struggled to make further headway
To the west, advances in the 96th Division zone were minimal as Bradley's regiments focused on consolidating their newly-won positions amidst intense enemy fire. Simultaneously, at Yuza Hill, fierce counterattacks were thwarted, and Mason’s 2nd Battalion accomplished the critical capture of Hill 69, just west of Ozato, despite heavy machine-gun fire coming from Yuza Dake. Further east, ahead of the 7th Marines, some 800 yards from the southern fringes of the two settlements, lay "the scene of the most frantic, bewildering, and costly close-in battle on the southern tip of Okinawa"Kunishi Ridge. This precipitous coral escarpment constituted the western-most anchor of the last heavily defended line on Okinawa. The ridge contained innumerable caves, emplacements, and tombs on both the forward and reverse slopes. The intervening area between this formidable fortress and the lines of the 7th Marines was a broad valley of grassy fields and rice paddies which offered no protection to advancing infantry. The supporting tanks were restricted to two approaches into the position: a road across the valley which cut through the center of the ridge and another along the coast line. Both of these routes were covered by anti-tank guns. Shortly after noon patrols from the 1st and 2nd Battalions moved out with armored support to probe the Japanese defenses. Intense frontal fire from Kunishi Ridge, enfilade fire from the enemy on Hill 69 opposing the attack of 2/1, and artillery concentrations directed at the tanks forced a withdrawal at 14:47 . Because of the complete fire coverage of the open valley enjoyed by the Japanese, both from the heights and slopes of the ridge itself and from the Yuza Dake area, it was apparent that a daylight assault of the position would be a costly affair. Consequently, after Colonel Snedeker had made a personal reconnaissance of the objective from a light liaison plane, it was determined to attack at night. The commanding officers of the assault battalions were oriented on the general plan during the afternoon. The central road and a line of telephone poles was designated as the boundary between battalions upon which the assault units would guide. The scheme of maneuver contemplated a penetration of the ridge where the road passed through it, followed by an expansion of the initial foothold to the right and left flanks to secure the remainder of the objective in the regimental zone of action. Normal artillery would be placed alternately on Kunishi Ridge and Mezado Ridge (500-600 yards southwest of Kunishi) until H-Hour and thereafter on the latter. On June 11, General Shepherd launched a concerted attack. The 22nd Marines successfully secured the Tomigusuki area and Hill 53, while the 29th Marines faced stiff opposition, making only limited gains against the heavily fortified hills west of Oroku. Meanwhile, the 4th Marines worked to strengthen their line, completing the encirclement of Ota’s naval forces. Nevertheless, the ramparts of the Oroku fortress were cracking, and Admiral Ota released his last dispatch to General Ushijima: “Enemy tank groups are now attacking our cave headquarters. The Naval Base Force is dying gloriously at this moment… We are grateful for your past kindnesses and pray for the success of the Army.”
During the night, artillery units successfully targeted and either killed or dispersed a group of Japanese troops attempting to cross the Kokuba River. Meanwhile, 51 infiltrators were eliminated as they tried to breach the lines held by the 22nd Marines. The following day, the 4th and 29th Marines intensified their efforts to compress the enemy pocket west of Tomigusuki, breaking through to seize Easy Hill while the 22nd Marines consolidated their positions. The capture of this key terrain feature forced the enemy into the alluvial flats along the coast between Oroku and Hill 53. "In the late afternoon enemy troops began displaying flags of surrender. Language officers equipped with loud speaker systems were dispatched to the front line areas to assist in the surrender of those Japs who desired to. The attempt was partially successful, 86 enemy soldiers voluntarily laid down their arms."
For several days General Buckner had been sending messages to the Japanese commander by radio broadcast and air drops pointing out the hopelessness of the enemy situation in an attempt to persuade General Ushijima to surrender. During the afternoon of 11 June, Tenth Army representatives were conducted to the 2d Battalion OP overlooking Itoman to await any enemy party that might desire to negotiate. At 1700 all fire was suspended