Marine sergeants sing the Marines’ Hymn during a graduation ceremony at Geiger Hall aboard Marine Corps Base Quantico on April 2, 2014. The class was the first to graduate from the condensed four-week Sergeants Course that historically has lasted seven weeks. - Marine sergeants sing the Marines’ Hymn during a graduation ceremony at Geiger Hall aboard Marine Corps Base Quantico on April 2, 2014. The class was the first to graduate from the condensed four-week Sergeants Course that historically has lasted seven weeks.