Battle of Iwo Jima

The Battle of Iwo Jima (硫黄島の戦い, Iōtō no Tatakai, Iōjima no Tatakai; 19 February – 26 March 1945) was a major battle in which the United States Marine Corps (USMC) and United States Navy (USN) landed on and eventually captured the island of Iwo Jima from the Imperial Japanese Army (IJA) during World War II. The American invasion, designated Operation Detachment, had the goal of capturing the island with its two airfields: South Field and Central Field.

The Japanese Army positions on the island were heavily fortified, with a dense network of bunkers, hidden artillery positions, and 18 km (11 mi) of tunnels. The American ground forces were supported by extensive naval artillery, and enjoyed complete air supremacy provided by U.S. Navy and Marine Corps aviators throughout the battle. The five-week battle saw some of the fiercest and bloodiest fighting of the Pacific War.

Unique among Pacific War battles involving amphibious island landings, total American casualties exceeded those of the Japanese, with a ratio of three American casualties for every two Japanese. Of the 21,000 Japanese soldiers on Iwo Jima at the beginning of the battle, only 216 were taken prisoner, some of whom were only captured because they had been knocked unconscious or otherwise disabled. Most of the remainder were killed in action, but it has been estimated that as many as 3,000 continued to resist within various cave systems on the island after most major fighting ended, until they eventually succumbed to their injuries or surrendered weeks later.

The invasion of Iwo Jima was controversial, with retired Chief of Naval Operations William V. Pratt stating that the island was useless to the Army as a staging base and useless to the Navy as a fleet base. The Japanese continued to maintain early-warning radar capabilities on Rota island, which was never invaded by American forces. Experiences with previous Pacific island battles suggested that the island would be well-defended and that seizing it would result in significant casualties. The lessons learned on Iwo Jima served as guidelines for American forces in the Battle of Okinawa two months later, as well as for the planned invasion of the Japanese homeland.

Joe Rosenthal's Associated Press photograph of the raising of the U.S. flag at the summit of the 169 m (554 ft) Mount Suribachi by six U.S. Marines became a famous image of the battle and the American war effort in the Pacific.