The United States Marine Corps was founded on November 10, 1775, during the American Revolutionary War. The Continental Congress established the Corps to serve as a specialized force capable of fighting both at sea and on land. Marines played key roles in early battles, providing shipboard security, amphibious assault capabilities, and rapid-response combat skills. Over time, the Marine Corps became known for its rigorous training, discipline, and distinctive role as an elite expeditionary force. Today, it remains a vital branch of the U.S. military.