Volcano and Ryukyu Islands campaign

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The Volcano and Ryūkyū Islands campaign was a series of battles and engagements between Allied forces and Imperial Japanese forces during the Pacific campaign of World War II from around January, 1945 until June, 1945. The two main land battles in the campaign were the Battle of Iwo Jima (February 16, 1945 – March 26, 1945) and the Battle of Okinawa (April 1, 1945 - June 21, 1945). One major naval battle occurred, called Operation Ten-Go (April 7, 1945) after the operational title given to it by the Japanese. The campaign was part of the Allied Japan campaign intended to provide staging areas for an invasion of Japan as well as supporting aerial bombardment and a naval blockade of the Japanese mainland. The dropping of atomic weapons on two Japanese cities, however, caused the Japanese government to surrender without an armed invasion being necessary.

Volcano and Ryukyu Islands campaign
Iwo Jima – Okinawa – Ten-Go

Japan campaign
Matterhorn – Volcano & Ryukyu Islands – Tokyo – Starvation – Tokyo Bay – Downfall – Hiroshima & Nagasaki

Pacific Ocean theater
Midway – Solomon Islands – Aleutian Islands – Gilberts & Marshall Islands – Marianas & Palau Islands – Volcano & Ryukyu Islands