The 1st Marine Division Band plays music before the start of 3rd Battalion, 4th Marines, 7th Marine Regiment’s reactivation ceremony at Lance Cpl. Torrey L. Gray Field, Sept. 17, 2015. - The 1st Marine Division Band plays music before the start of 3rd Battalion, 4th Marines, 7th Marine Regiment’s reactivation ceremony at Lance Cpl. Torrey L. Gray Field, Sept. 17, 2015.