Armed Forces Day.

Military.com: Armed Forces Day.

Among the many military holidays celebrated each year is Armed Forces Day. Celebrated the third Saturday in May, Armed Forces Day falls during Military Appreciation Month and joins Memorial Day, Military Spouse Appreciation Day, and Victory in Europe Day (V-E Day) as another May military-themed holiday.

The History of Armed Forces Day:

On Aug. 31, 1949, Defense Secretary Louis Johnson announced the creation of an Armed Forces Day to replace separate Army, Navy and Air Force Days. The single-day celebration stemmed from the unification of the armed forces under one agency -- the Department of Defense.
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The first Armed Forces Day was celebrated by parades, open houses, receptions, and air shows. In Washington, D.C., 10,000 troops of all branches of the military, cadets and veterans marched past the president and his party. 

National Today: Armed Forces Day, May 20, 2023. 

Armed Forces Day is a special holiday for people all over the world to come together and thank the men and women of the United States Armed Forces. First conceived by President Harry S. Truman, the holiday was established in 1949. The creation of a single day celebration for all five branches of the United States military made sense due to its recent unification under the Department of Defense. Today, Armed Forces Day is celebrated on the third Saturday of every May, this year falling on May 20. Be sure to mark your calendar & support our military!