Trivia: Which is the oldest branch of the U.S. military?
Navy
Air Force
Army
Marines
The correct answer is Army
So why is this answer correct? : The United States Army was officially founded on June 14, 1775, making it just one year older than the United States itself. As the oldest branch of the military, the Army was crucial to the success of the American Revolution. Today, the Army serves primarily by land and is the largest of the U.S. military branches, making up roughly 35% of all active-duty personnel.