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""
Hispanics in the United States Marine Corps the Meritorious Service Medal with three gold stars, the Navy and Marine Corps Commendation Medal, the Joint Service Achievement Medal, and the Navy and Marine Corps Achievement Medal. On April 25, 2007, SgtMaj Estrada stepped down from his post as Sergeant Major of the Marine Corps. Aside from Sergeant Major of the Marine Corps, master gunnery sergeant (MGySgt) and sergeant major are the highest enlisted ranks in the Marine Corps; however, there are far fewer master gunnery sergeants than sergeants major. One of the major differences between the two E-9 ranks is that master gunnery sergeants retain their Military Occupational