Military History & Leadership

Related Military Information Guides

Military Services Birthdays

Army Birthday – 14 June 1775

Navy Birthday – 13 Oct 1775 (Abolished Feb 1781 - Reinstated 7 Sep 1781)

Marine Corps Birthday – 10 November 1775

Air Force Birthday – 18 September 1947

Space Force Birthday - 20 December 2019

Coast Guard Birthday – 4 August 1790*


*According to the Institute of Heraldry, and in keeping with the order in which troops are listed in Department of Defense Directive 1005.8, during peacetime the Coast Guard falls under the Department of Homeland Security.  If, during wartime, the Coast Guard is called into service under the control of the Department of Defense, then the Coast Guard flag would come before the Air Force flag in order of precedence.