Fort Missoula Internment Camp was an internment camp operated by the United States Department of Justice during World War II. Japanese Americans and Italian Americans were imprisoned here during this war. Fort Missoula was established near Missoula, Montana as a permanent military post in 1877 in response to citizen concerns of conflict with local Native American tribes. In 1941 Fort Missoula was turned over to the Department of Immigration and Naturalization for use as an Alien Detention Center for non-military Italian men.