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 high rates of courts-martial, non-judicial punishments, unauthorized absences, and outright desertions. The re-making of the Marine Corps began in the late 1970s when policies for discharging inadequate Marines were relaxed leading to the removal of the worst performing ones. Once the quality of new recruits started to improve, the Marines began reforming their NCO corps, an absolutely vital element in the functioning of the Marine Corps. After Vietnam, the Marine Corps resumed its expeditionary role. On 4 November 1979, Islamist students supporting the so-called Iranian Revolution stormed the Embassy of the United States in Tehran and took 53 hostages, including