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""
History of the United States Marine Corps flag raising on Iwo Jima, "...the raising of that flag on Suribachi means a Marine Corps for the next five hundred years." The acts of the Marines during the war added to their already significant popular reputation, and the Marine Corps War Memorial adjacent to Arlington National Cemetery was dedicated in 1954. As the Marine Corps grew to its maximum size, Marine aviation also peaked at 5 air wings, 31 aircraft groups and 145 flying squadrons. The Battle of Guadalcanal would teach several lessons, such as the debilitating effects of not having air superiority, the vulnerability of unescorted targets (such