Battle of Iwo Jima
The 36-day battle for Iwo Jima resulted in more than 26,000 American casualties, including 6,800 dead. By comparison, the 82-day battle for Okinawa resulted in casualties of over 62,000, of whom over 12,000 were killed or missing. Iwo Jima was also the only U.S. Marine battle where the Americans suffered more casualties than the Japanese.