Army Ranks are broken down by enlisted and officer. Enlisted Ranks E-1 | Private | E-2 | Private | E-3 | Private First Class | E-4 | Specialist | E-5 | Sergeant | E-6 | Staff Sergeant | E-7 | Sergeant First Class | E-8 | Master Sergeant | E-8 | First Sergeant | E-9 | Sergeant Major | E-9 | Command Sergeant Major | Warrant Officer Ranks W-1 | Warrant Officer 1 | W-2 | Chief Warrant Officer 2 | W-3 | Chief Warrant Officer 3 | W-4 | Chief Warrant Officer 4 | W-5 | Master 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 | O-10 | General of the Army (wartime rank) | |