United States Marine Corps off-base, except in transit to and from their place of duty and in the event of an emergency. As in any military organization, the official and unofficial traditions of the Marine Corps serve to reinforce camaraderie and set the service apart from others. The Corps' embrace of its rich culture and history is cited as a reason for its high "esprit de corps". The "Marines' Hymn" dates back to the 19th century and is the oldest official song in the United States armed forces. The Marine motto "Semper Fidelis" means "Always Faithful" in Latin, often appearing as "Semper Fi"; also
Sergeant Major of the Marine Corps Marine Corps and typically serves a four-year term, though his service is at the discretion of the Commandant. Since Sergeant Major Wilbur Bestwick was appointed the first Sergeant Major of the Marine Corps in 1957, 17 different Marines have filled this post. On January 20, 2015, Commandant Joseph F. Dunford, Jr. announced that Sergeant Major Ronald L. Green would relieve Sergeant Major Micheal P. Barrett and serve as the 18th Sergeant Major of the Marine Corps on February 20, 2015. Sergeant Major of the Marine Corps Sergeant Major of the Marine Corps (officially abbreviated to SMMC<ref name="ALMAR 016/09"></ref>) is a