Culture of the United States Marine Corps reminder to provide good order and discipline. The Marines' Hymn dates back to 1919 and is the oldest official song in the U.S. Armed Forces. It embraces some of the most important battles of the Corps at that time, including Chapultepec and Derna. Subtle changes and unofficial verses have been added as the history of the Corps grew. The official Marine Corps emblem is the Eagle, Globe, and Anchor, sometimes abbreviated "EGA". Adopted in its present form in 1868 by Commandant Jacob Zeilin, it derives partially from ornaments worn by the Continental Marines and the British Royal Marines, and is
Assistant Commandant of the Marine Corps the Navy – may delegate to or prescribe for him. Orders issued by the Assistant Commandant in performing such duties have the same effect as those issued by the Commandant. When there is a vacancy in the office of Commandant of the Marine Corps, or during the absence or disability of the Commandant, the Assistant Commandant shall perform the duties of the Commandant until a successor is appointed or the absence or disability ceases. ! # ! class="unsortable"|Photo ! Rank ! Name ! Tenure from ! Tenure to ! Became Commandant Assistant Commandant of the Marine Corps The Assistant Commandant