Marine Corps Communication-Electronics School Marines retire the colors during the activation ceremony of the Communication Training Battalion at Lance Cpl. Torrey L. Gray Field, March 12, 2015. The pinnacle of the ceremony was the uncasing of the American flag and Marine Corps flag, which signified the beginning of a unit’s history and lineage. (Official Marine Corps photo by Lance Cpl. Medina Ayala-Lo/Released) - Marine Corps Communication-Electronics School Marines retire the colors during the activation ceremony of the Communication Training Battalion at Lance Cpl. Torrey L. Gray Field, March 12, 2015. The pinnacle of the ceremony was the uncasing of the American flag and Marine Corps flag, which signified the beginning of a unit’s history and lineage. (Official Marine Corps photo by Lance Cpl. Medina Ayala-Lo/Released)