United States Marine Corps served as a convenient resource for interventions and landings to protect American interests overseas. The Corps was involved in over 28 separate interventions in the 30 years from the end of the American Civil War to the end of 19th century. They would be called upon to stem political and labor unrest within the United States. Under Commandant Jacob Zeilin's tenure, Marine customs and traditions took shape: the Corps adopted the Marine Corps emblem on 19 November 1868. It was during this time that "The Marines' Hymn" was first heard. Around 1883, the Marines adopted their current motto ""Semper Fidelis""
Commandant of the Marine Corps while serving in office. "The Commandant is directly responsible to the Secretary of the Navy for the total performance of the Marine Corps. This includes the administration, discipline, internal organization, training, requirements, efficiency, and readiness of the service. The Commandant is also responsible for the operation of the Marine Corps material support system." Since 1801, the official residence of the Commandant has been located in the Marine Barracks in Washington, D.C. and his main offices are in Arlington County, Virginia. The responsibilities of the Commandant are outlined in Title 10, Section 5043, the United States Code and the position is