The 3rd United States Infantry has served our Nation continuously since 1784, and today is the oldest active-duty infantry unit in the U.S. Army. Headquartered out of Fort Myer, Virginia, it is traditionally known as 'The Old Guard', a proud nickname ascribed by General Winfield Scott during a victory parade at Mexico City in 1847.

The 3rd United States Infantry has served our Nation continuously since 1784, and today is the oldest active-duty infantry unit in the U.S. Army. Headquartered out of Fort Myer, Virginia, it is traditionally known as 'The Old Guard', a proud nickname ascribed by General Winfield Scott during a victory parade at Mexico City in 1847.