Office of Civilian Defense was a United States federal emergency war agency set up May 20, 1941 by Executive Order 8757 to co-ordinate state and federal measures for protection of civilians in case of war emergency. Its two branches supervised protective functions such as blackouts and special fire protection and "war service" functions such as child care, health, housing, and transportation. It also created the Civil Air Patrol. The agency was terminated by EO 9562 of June 4, 1945.