THE MARINE CORPS IN WORLD WAR II

The U. S. Marines Corps was America's amphibious spearhead of World War II. Its mission was to assault and capture enemy-held islands in the Pacific campaigns. At its peak strength in 1945, the Corps had over 485,000 Marines serving on active duty.

The 6 Marine divisions that served in the war fought, bled and died in some of the toughest battles in the long, brutal history of warfare. They won victories across the Pacific against a fanatical enemy, but at a terrible price; nearly 20,000 Marines died in World War II, and more than 67,000 were wounded.

The Marines Corps pioneered the tactics and techniques of one of the most challeging forms of warfare; amphibious assault. During the war, the Navy-Marine Corps team projected force across vast ocean expanses during the island hopping campaigns. But no matter how large the fleet, victory was only assured by the Marines on the ground.

One of the Corps' greatest amphibious warriors was General Holland M. Smith. He was known almost universally throughout the Fleet Marine Force as "Howlin' Mad," because of his short temper. General Smith (seen below at Iwo Jima in 1945) served in the Corps from 1906-1946.

"Since I first joined the Marines, I have advocated aggressiveness in the field and constant offensive action. Hit quickly, hit hard, and keep right on hitting. Give the enemy no rest, no opportunity to consolidate his forces and hit back at you. This is the shortest road to victory in the type of island war the Marines had to fight and is most economical of lives in the long run."

Coral and Brass
General H. M. Smith USMC (Ret)

In the 1930's, Marine officers at MCB, Quantico developed the Tentative Manual for Landing Operations. This keystone document detailed procedures for naval gunfire support, combat loading, beachhead organization, and many other critical aspects of amphibious operations. Standardized in 1938 as Fleet Training Publication 167, Landing Operations Doctrine, it became the basis for all the amphibious operations conducted in World War II.

The doctrinal foundation of FTP 167 was validated by a series of fleet landing exercises held in the years leading up to the war. Marines and Sailors worked out the details of projecting force from the sea against defended beaches. They experimented with vehicles such as tanks, amphibian tractors, and various landing boats. The worked out gunfire tables for close support ships, and developed techniques for close air support, and many other subjects.


(left)1stLt R.A. Tilgeman, of
Co. F 2/27 holds battlefield
briefing under fire–Iwo Jima,
1040 20 February 1945.
Note: 1stLt Tilgeman received the Silver Star for gallantry on Iwo Jima. USMC Photo

Perhaps the most important organizational event prior to the war was the establishment of the Fleet Marine Force. This occurred on 7 December 1933 in Navy Department General Order 241, which ordered the Corps to create and maintain a land expeditionary force as part of the fleet. During the 1930's the FMF was a skeleton force, but its framework would be proven in the crucible of Pacific combat.



(above) A rifle squad on Tarawa beachhead
20 November 1943 USMC Photo

The FMF was the ground component of the Pacific Fleet in World War II. Marine divisions were designed and built for amphibious assault; the tactic of projecting a powerful combat force against a heavily fortified and defended beachhead under cover of naval gunfire and close air support. Marine divisions were capable of rapidly building striking power against incredible resistance, and then overcoming it to capture their objectives.

(left) Saipan–15 June 1944. A Marine leader points the way forward into the hell of a D–Day in the Pacific. Behind him lies a knocked out LVT.

still image from a USMC combat camera film

World War II in the Pacific has often been described as a "sergeant's war." Small unit leaders carried an immense amount of responsibility for the overall battle. On most Pacific islands, there was little space for wide, sweeping maneuvers, or operational-level tactics. Typically, infantry Marines would team-up with tanks, engineers, and other attachments to hammer against the enemy's lines.

"As usual, the infantry bore the brunt of the fighting. Marines, equipped with demolitions, portable flamethrowers, a variety of small arms, bazookas, and smoke and fragmentation grenades, maneuvered into position in small groups and attempted to neutralize the enemy positions one by one. It was a slow, tedious, and costly process calling for able leadership on the part of squad and fire team leaders, a number of whom were killed or wounded and had to be evacuated."

Volume IV
History of US Marine Corps Operations
in World War II


(above) Shipboard briefing for 2nd MarDiv Marines
before the assault on Tarawa–November 1943 USMC Photo

(left) Oral operations order template issued to officer candidates undergoing training at
Marine Corps Base, Quantico.
WW2 Gyrene collection

NOTE: Color photo at top of page courtesy World War II in Color

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