- Master Sergeant (MSgt) - 3 Chevrons, Cross Rifles in the Center, 3 Rockers - SNCO E-8 (1Sgt) - First Sergeant (1Sgt) - 3 Chevrons, Diamond in the Center, 3 Rockers - SNCO E-9 (MGySgt) - Master Gunnery Sergeant (MGySgt) ...