In the United States, Armed Forces Day is celebrated on the third Saturday in May. The day was created in 1949, and was a result of the consolidation of the military services in the Department of Defense. It was intended to replace the separate Army, Navy, Air Force, Marine Corps, and Coast Guard Days, but observance of these days, especially within each particular service, continues to this day.
The first Armed Forces Day was celebrated by parades, open houses, receptions and air shows. Armed Forces Day is celebrated annually on the third Saturday of May, and Armed Forces Week begins on the second Saturday of May and ends on the third Sunday of May. Because of their unique training schedules, National Guard and Reserve units may celebrate Armed Forces Day/Week over any period in May. The purpose of Armed Forces day is to honor Americans serving in the five services - the Army, Navy, Marines, Air Force, and Coast Guard.