but are separated during personal time and lights out. All the services integrate male and female members following boot camp and first assignment. After training, unmarried junior enlisted members will typically reside in barracks. In the 21st century, these service members are generally housed in individual rooms conforming to the DoD's "1+1 standard", though exceptions still exist. During unaccompanied, dependent-restricted assignments, non-commissioned and commissioned officer ranks may also be required to live in barracks. Amenities in these barracks increase with the rank of the occupant. Unlike the other services, the U.S. Air Force officially uses the term "dormitory" to refer to its unaccompanied housing. During World War II, many U.S. barracks were made of inexpensive, sturdy and easy to assemble Quonset huts that resembled Native American long houses (having a rounded roof but made out of metal). See also Cantonment, a temporary or semi-permanent military quarters. B hut Barkas, Hyderabad Notes References Black, Jeremy, A Military Revolution?: Military Change and European Society, 1550-1800 (London, 1991) Dallemagne, François, Les casernes françaises, (1990) Douet, James, British Barracks, their social and architectural importance, 1660-1914 (London, 1997) Roberts, Michael The Military Revolution, 1560-1660 (Belfast, 1956); reprinted with some amendments in Rogers, Clifford, ed., The Military Revolution Debate Rogers, Clifford, ed., The Military Revolution Debate: Readings on the Military Transformation of Early Modern Europe (Boulder, 1995) 1911 Encyclopædia Britannica External links Royal Engineers Museum Military Works (Barrack construction) Military units and formations by type Human habitats Total institutions