The Battle of Eniwetok was a battle of the Pacific campaign of World War II, fought between 17 February 1944 and 23 February 1944, on Eniwetok Atoll in the Marshall Islands.
The island had been lightly defended in 1943—the Japanese believed that the Americans would strike at the southwestern Marshalls first. However, the defenders had been reinforced by the 1st Amphibious Brigade in January. Its commander, Major General Yoshimi Nishida along with Tank Company/1st Amphibious Brigade led by First Lieut. Ichikawa (9 Type 95 Light Tanks), had begun to construct defenses, but repeated air attacks made this difficult, and the tiny coral islands meant that defence in depth would be impossible.
Vice Admiral Raymond Spruance preceded the invasion by Operation Hailstone, a carrier strike against the Japanese base at Truk in the Caroline Islands. This raid destroyed 15 warships and more than 250 planes, cutting off Eniwetok from support and supply.
The mistake was not repeated at Parry Island. The battleships USS Tennessee and USS Pennsylvania and other ships delivered more than 900 tons of explosive onto the island. When the 22nd Marines landed on 22 February resistance was light. On 23 February the other islands of the atoll were captured.