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""
National Museum of the Marine Corps A replica of the "Iron Mike" statue at Marine Corps Base Quantico stands to one side of the main entrance. The museum is , and is open to the public with free admission. Established in 1979, the Marine Corps Heritage Foundation is a private, non-profit organization that supports the historical programs of the Marine Corps. In 1999, the Foundation expanded its mission to include the creation of the National Museum of the Marine Corps. The National Museum of the Marine Corps is designed to be the centerpiece of a complex of facilities called the Marine Corps Heritage Center. This multi-use,