What is the oldest post in the Marine Corps?

The oldest post in the Marine Corps is located at 8 and I, which is a historic location in Washington, D.C. This post serves as the headquarters for the Marine Barracks Washington, D.C., which was established in 1801. The significance of 8 and I lies in its long-standing tradition and historical role in the Marine Corps, including ceremonial functions and social events.

This post has a rich heritage, as it is where many important ceremonial activities take place, such as the prestigious evening parades and the funerals of prominent military figures. The location itself, being in the nation’s capital, underscores the Marine Corps' historical connection to national events and military history.

In comparison, while other locations such as Quantico, Camp Lejeune, and Parris Island are significant in their own right, they were established later and serve different purposes within the Marine Corps structure. Quantico is known primarily as a training base, Camp Lejeune serves as a major Marine Corps base with operational roles, and Parris Island is specifically focused on recruit training. Each of these has its own importance, but none have the historical precedence that 8 and I holds as the oldest post in the Marine Corps.