United States historical military districts

There have been many United States Army historical military districts. Domestically, the United States Army has had military districts ranging from 1798 to 1881. They were reorganized several times: in 1800, in 1813, in 1815, in 1821, in 1837, in 1844, in 1848, in 1861, and in 1865. Internationally, military districts included Cuba, the Allied Military Government of Occupied Territories (containing Germany, Italy, Austria, and Japan post-WWII), South Korea, the Trust Territory of the Pacific Islands, and the Ryukyu Islands of Japan.