1. 3rd Infantry Regiment (The Old Guard)
The 3rd Infantry Regiment, known as “The Old Guard,” is the oldest active-duty infantry unit in the U.S. Army, with a history dating back to 1784. Renowned for its ceremonial duties, including guarding the Tomb of the Unknown Soldier and serving as the official escort to the President, The Old Guard also boasts a proud combat record, participating in conflicts from the War of 1812 to recent engagements. Its storied service is widely documented and praised. (army.mil)
