The US Army Post, Fort Shafter, was completed in 1907 in Honolulu and had an ordnance depot was added in 1917 then in 1941 it was abandoned after the Pearl Harbor attack.
1907Present 
War came to Fort Shafter on December 7, 1941, where the Hawaiian Department commander, Lieutenant General Walter C. Short, occupied Quarters 5. Fort Shafter became a busy headquarters and the barracks on Palm Circle were converted to offices. In 1944, the Army Corps of Engineers erected the "Pineapple Pentagon" (buildings T-100, T-101, and T-102) in just 49 days. 
