Marines' Hymn Heaven's scenes, They will find the streets are guarded By United States Marines. </poem> Marines' Hymn The "Marines' Hymn" is the official hymn of the United States Marine Corps, introduced by the first director of USMC Band, Francesco Maria Scala. It is the oldest official song in the United States Armed Forces. The "Marines' Hymn" is typically sung at the position of attention as a gesture of respect. However, the third verse is also used as a toast during formal events, such as the birthday ball and other ceremonies. Some lyrics were popular phrases before the song was written. The
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