There have been many United States historical military districts. Domestically, the United States Armed Forces 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.