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
Assistant Commandant of the Marine Corps Assistant Commandant of the Marine Corps The Assistant Commandant of the Marine Corps (ACMC) is the second highest-ranking officer in the United States Marine Corps, and serves as a deputy for the Commandant of the Marine Corps (CMC). Before 1946, the title was known as Assistant to the Commandant. The Assistant Commandant is nominated for appointment by the President and must be confirmed via majority vote by the Senate. In the event that the Commandant is absent or is unable to perform his duties, the Assistant Commandant assumes the duties and responsibilities of the Commandant. For this reason, the Assistant