Which U.S. military branch marked its 250th anniversary on June 14, 2025?

The United States Army marked its 250th anniversary on June 14, 2025.

The Continental Congress established the Army on June 14, 1775, during the early stages of the American Revolutionary War. That date is now observed annually as the Army’s birthday and coincides with Flag Day in the United States.

A large anniversary parade and celebration took place in Arlington, Virginia, and Washington, D.C., on June 14, 2025. The event served as an early major commemoration connected with the broader celebrations leading to America’s 250th anniversary in 2026.

The Army is older than the United States Navy, Marine Corps, Air Force, Space Force, and Coast Guard in their current organizational forms. It is the oldest of the six branches of the U.S. Armed Forces.