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""
Organization of the United States Marine Corps for conducting land operations to support naval campaigns, including the seizure of naval and air bases. All Marine Aviation programs except for specific command and control and air defense programs are funded by the Navy. Marine Corps officers are assigned to the Office of Chief of Naval Operations (OPNAV) Air Warfare Branch (N98) to represent Marine Aviation interests and serve as "action officers" (viz., staff members). By Congressional mandate, the OPNAV Director, Expeditionary Warfare Branch (N95) is filled by a Marine general. The Marine Corps cooperates with the Navy on many institutional support services. The corps receives a significant portion