Marines in World War II Commemorative Series By Brigadier General Gordon D. Gayle U.S. Marine Corps (Ret) TABLE OF DISTANCES FROM PELELIU In Nautical Miles [Sidebar ( page 2 ):] The Peleliu operation was to be conducted by two divisions, one Marine and one Army. In the Pacific area since mid-1942, the 1st Marine Division was a veteran, combat-tested organization which launched the first offensive landing in the Pacific War when it attacked Guadalcanal on 7 August 1942. After a period in Australi

Major General Paul J. Mueller, USA, the commander of the 81st Division, was a graduate of the famous West Point Class of 1915. He commanded an infantry battalion in France in World War I, and during the interwar period he had a succession of assignments to infantry commands, staff billets, and schools. In August 1941 he assumed command of the 81st Infantry Division at Fort Rucker, Alabama, and moved his division during its training period successively from Florida to Tennessee to California befo

[Sidebar ( page 7 ):] Department of Defense Photo (USMC) 95115 In their earlier operations, especially at Guadalcanal, the primary experience of 1st Division Marines with naval gunfire was at the receiving end. On New Britain, the character and disposition of Japanese defenses did not call for extensive pre-landing fire support, nor did subsequent operations ashore. The naval gunfire to which the Guadalcanal veterans were exposed frequently and heavily damaged planes and installations ashore. It

Subsequent to D-Day there were numerous instances of well-called and -delivered naval gunfire support: night illumination during the night of 15–16 September, the destruction of two major blockhouses earlier reported “destroyed,” and effective support of the Ngesebus landing toward the end of the battle....

On the enemy’s side, Lieutenant General Sadae Inoue, a fifth generation warrior of stout military reputation, commanding the 14th Infantry Division , fresh from the Kwangtung Army in China, met in Tokyo in March 1944 with Japanese Premier Hideki Tojo, who was also Minister of War. Tojo had concluded that Japan was no longer able to hold the Palaus against growing Allied naval dominance in the Western Pacific. Instead, he had decided to sell the Palaus to the United States at the highest possible

[Sidebar ( page 16 ):] Inasmuch as Peleliu’s fringing reef would not permit landing craft within 700 yards of the beach, such craft deposited tanks at the reef’s edge. There the depths permitted tanks to operate in most areas, without being submerged, but not in all. A plan was devised to form tanks into small columns, each to be led by an LVT. So long as the LVT was grounded on the reef, the tanks could follow in trace. But when the LVT encountered a depth which floated it, tanks halted while t

[Sidebar ( page 20 ):] Planning for the seizure of the southern Palaus (Angaur and Peleliu-Ngesebus) had been the responsibility of III Amphibious Corps (Major General Roy S. Geiger). But General Geiger and his staff had been fully occupied during the critical planning weeks, up to and including the capture of Guam, from 21 July to 10 August. The Guam operation ended more than a month later than originally contemplated. Meanwhile, someone else had to fill the corps planning function for the Pala

On D plus 1, when the 1st Marines had launched their costly Umurbrogol assault, the 5th Marines on its right also faced an assault situation, but one of substantially less opposition and easier terrain. Lieutenant Colonel Boyd’s 1/5 had to fight across the airfield, from southwest to northeast, and through the built-up area similar to that which faced Honsowetz’s 2/1. The battalion was subjected to observed fire from the Umurbrogol and to small arms fire from Japanese defenders in the rubble-fil

In the south, from D plus 1 through D plus 3, the 7th Marines was in vigorous assault against extensive fortifications in the rear of the Scarlet Beaches. These were defended by a full battalion, the elite 2d Battalion, 15th Regiment . Although isolated and surrounded by the Marines, this battalion demonstrated its skill and its understanding of Colonel Nakagawa’s orders and mission: to sell Peleliu at the highest possible price. The 7th Marines attacked with 3/7 on the left and 1/7 on the right

As the 7th Marines moved to its mission, the 5th Marines was again successfully opening up opportunities on Peleliu’s eastern, “lobster claw” peninsula. Most of those opportunities, unfortunately were never exploited. By the end of D plus 2, the 5th Marines stood at the approach to the eastern peninsula, and astride the East Road just east of the 1st Marines’ terrible struggle in Umurbrogol. It had fought somewhat clear of the galling fires from Umurbrogol, and planned an assault on the eastern

With southern and eastern Peleliu captured, there now began an encirclement of the Japanese defenders in central Peleliu, and an attack against the Japanese defending northern Peleliu and nearby Ngesebus and Kongauru. This was the obvious next tactical phase for combat on Peleliu. However, securing it was less necessary for the basic Peleliu tactical and strategic goals than for the mopping-up of the island. As the 1st Marine Division’s Assistant Commander, Brigadier General Oliver P. Smith, lat

A plan to encircle the Pocket, and deny reinforcement to northern Peleliu was immediately formulated. General Rupertus’ staff was closely attended by selected III Corps staff officers, and General Geiger also was present. The plan called for two regiments to move up the West Road, the Army 321st Infantry leading in the attack, and the 5th Marines following. The Marines were to pass through the Army unit after it had gone beyond the Pocket on its right, and the 5th would continue then to take nor

In a very real sense, the Umurbrogol Pocket typified the worst features of the post D-Day campaign for Peleliu. It provided the scene of some of Peleliu’s worst and most costly fighting, and of some of the campaign’s best and worst tactical judgments. Its terrain was the most difficult and challenging on the island. Prelanding planning did not perceive the Pocket for what it was, a complex cave and ridge fortress suitable to a fanatic and suicidal defense. Plans for the seizure of the area treat

When on 20 October Major General Mueller became responsible for mopping up on Peleliu, he addressed the tactical problem as a siege situation, and directed his troops to proceed accordingly. Over a period of nearly six weeks, his two regiments, the 322d and 323d Infantry, plus 2/321, did just that. They used sandbags as an assault device, carrying sand up from the beaches and inching the filled sandbags forward to press ever nearer to positions from which to attack by fire the Japanese caves and

[Sidebar ( page 48 ):] The Secretary of the Navy awarded the Presidential Unit Citation to the 1st Marine Division, and its reinforcing organizations, for “extraordinary heroism in action against enemy Japanese forces at Peleliu and Ngesebus from September 15 to 29, 1944.” In addition, Marine Aircraft Group 11 and the 3d 155mm Howitzer Battalion were awarded the Navy Unit Commendation. On an individual basis, 69 participants in the battle for Peleliu were decorated with the Navy Cross, the secon

The basic source work for this pamphlet is the Marine Corps’ official monograph, The Assault on Peleliu , by Maj Frank O. Hough, published by the Government Printing Office in 1950, while LtCol Gordon D. Gayle was serving as deputy director of Marine Corps history, and editor of the monograph series. Other books used in this narrative were: George W. Garand and Truman R. Strobridge, Western Pacific Operations , vol IV, History of U.S. Marine Corps Operations in World War II (Washington: Historic

Brigadier General Gordon D. Gayle, USMC (Ret), graduated from the U.S. Naval Academy in June 1939 and was commissioned a Marine second lieutenant. After completing Basic School in Philadelphia in 1940, he was assigned to the 5th Marines, 1st Marine Division with which he served in three Pacific campaigns: Guadalcanal, Cape Gloucester, and Peleliu. For his extraordinary heroism while commanding the 2d Battalion, 5th Marines, on Peleliu, he was awarded the Navy Cross. He returned to 1st Marine Div