The U.S. Army was founded on June 14th, 1775, when the Continental Congress authorized enlistment of riflemen to serve the United Colonies for one year.
Originally called “the American continental army,” it was formed by the Second Continental Congress and commanded under General George Washington to fight against Britain.
The Army is the oldest of the four military branches. It was created on June 14, 1775, so it’s four months older than the United States Navy, five months older than the United States Marine Corps, and 172 years older than the United States Air Force, which began as part of the Army.
Today, the United States Army boasts over one million soldiers on duty, with an additional 800,000 Reserve- and National Guard members.