 In a rifle company, a Staff Sergeant with the Military Occupational Specialty of 0369 may serve as a machine gun or mortar section leader in a weapons platoon, or a platoon sergeant for a rifle platoon.In a weapons company, a Staff Sergeant may serve as a section leader for a Combined Anti-Armor Team, or as a section leader in a heavy machine gun platoon, 81mm mortar platoon or anti-armor platoon.An infantry Gunnery Sergeant may serve as a weapons platoon sergeant or as the Company Gunnery Sergeant for a rifle company.