| Marine Corp Ranks are broken down by enlisted and officer. Enlisted Ranks | E-1 | Private | | E-2 | Private First Class | | E-3 | Lance Corporal | | E-4 | Corporal | | E-5 | Sergeant | | E-6 | Staff Sergeant | | E-7 | Gunnery Sergeant | | E-8 | Master Sergeant | | E-8 | First Sergeant | | E-9 | Master Gunnery Sergeant | | E-9 | Sergeant Major | Warrant Officer Ranks | W-1 | Warrant Officer | | W-2 | Chief Warrant Officer 2 | | W-3 | Chief Warrant Officer 3 | | W-4 | Chief Warrant Officer 4 | | W-5 | Chief Warrant Officer 5 | Officer Ranks | O-1 | Second Lieutenant | | O-2 | First Lieutenant | | O-3 | Captain | | O-4 | Major | | O-5 | Lieutenant Colonel | | O-6 | Colonel | | O-7 | Brigadier General | | O-8 | Major General | | O-9 | Lieutenant General | | O-10 | General | |