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""
Uniforms of the United States Marine Corps white trousers are not authorized for wear with either the long-sleeved or the short-sleeved khaki shirt, precluding the "C" and "D" uniforms. This uniform replaced, in 2000, an all-white uniform, similar in appearance to that of the Naval Officer/CPO white dress uniform. To differentiate themselves from the infantry, musicians—at that time, buglers and signal callers—would reverse the traditional colors. Today members of the ten Marine Corps field bands wear the standard Blue Dress uniforms, while the members of the United States Marine Corps Band (The President's Own) and the United States Marine Drum and Bugle Corps (The Commandant's Own), both