Camp Smedley D. Butler is actually a collection of facilities and satellite installations spread throughout Okinawa. Camp Smedley D. Butler was formerly called Camp or Fort Buckner, named for Army General Simon Bolivar Buckner Jr., who commanded ground forces in the invasion of Okinawa and was killed in the last days of the battle. The renaming of Buckner to Butler occurred after most U.S. Army troops left Okinawa, and the base was transferred to the USMC.