OFFICERS: US MILITARY USAF/USArmy/USMC officer corps, lowest to highest ranking: O1-Second Lieutenant (2Lt) O2-First Lieutenant (1Lt) O3-Captain (Capt) O4-Major (Maj) O5-Lieutenant Colonel (Lt. Col) O6-Colonel (Col) O7-Brigadier General (Brig. Gen.) O8-Major General (Maj. Gen) O9-Lieutenant General (Lt. Gen.) O10-General (Gen) O11-General of the [Air Force/Army] (War time use only, commonly known as a "Five star") USNavy officer corps: O1-Ensign (ENS) O2-Lieutenant, Junior Grade (LTJG, sometimes refferred to as a 'Jig') O3-Lieutenant (LT) O4-Lieutenant Commander (LTCDR) O5-Commander (CDR) O6-Captain (CPT) O7-Rear Admiral (Lower half) (RDML) O8-Rear Admiral (Upper half) (RADM) O9-Vice Admiral (VADM) O10-Admiral (ADM) O11-Fleet Admiral (FADM) ENLISTED: USAF E1 - Airman Basic (AB) E2 - Airman (AMN) E3 - Airman First Class (A1C) E4 - Senior Airman (SrA) E5 - Staff Sergeant (SSgt) E6 - Technical Sergeant (TSgt) (often shortened to "Tech Sergeant") E7 - Master Sergeant (MSgt) E8 - Senior Master Sergeant (SMSgt) E9 - Chief Master Sergeant (CMSgt) In the Air Force, E1-E4 can be addressed as "Airman," and E5-E8 can be addressed as "Sergeant." Master Sergeants (E7) usually get their full rank, and E8's are usually addressed as "Senior," while E9's get their full rank or "Chief." ENLISTED: USArmy E1 - Private (PV1) E2 - Private (PV2) E3 - Private First Class (PFC) E4 - Specialist (SPC)/Corporal (CPL) E5 - Sergeant (SGT) E6 - Staff Sergeant (SSG) E7 - Sergeant First Class(SFC) E8 - Master Sergeant (MSG)/First Sergeant (1SG) E9 - Sergeant Major (SGM) ENLISTED: USMC E1 - Private (PV1) E2 - Private First Class (PFC) E3 - Lance Corporal (LCpl) E4 - Corporal (Cpl) E5 - Sergeant (Sgt) E6 - Staff Sergeant (SSgt) E7 - Gunnery Sergeant (GySgt) E8 - Master Sergeant (MSgt)/First Sergeant (1stSgt) E9 - Master Gunner Sergeant (MGySgt)/Sergeant Major (SgtMaj) NOTE: Gunnery Sergeants and Master Gunnery Sergeants are often referred to as "Gunney" and "Master Gunns," respectively. ENLISTED: USNavy E1 - Seaman Recruit (SR) E2 - Seaman Apprentice (SA) E3 - Seaman (SN) E4 - Petty Officer Third Class (PO3) E5 - Petty Officer Second Class (PO2) E6 - Petty Officer First Class (PO1) E7 - Chief Petty Officer (CPO) E8 - Senior Chief Petty Officer (SCPO) E9 - Master Chief Petty Officer (MCPO) Warrant Officers: USArmy W1 - Warrant Officer One (WO1) W2 - Chief Warrant Officer Two (CW2) W3 - Chief Warrant Officer Three (CW3) W4 - Chief Warrant Officer Four (CW4) W5 - Master Chief Warrant Officer (CW5) Warrant Officers: USNavy W1 - Warrant Officer One (WO1) W2 - Chief Warrant Officer Two (CWO2) W3 - Chief Warrant Officer Three (CWO3) W4 - Chief Warrant Officer Four (CWO4) Warrant Officers: USMC W1 - Warrant Officer One (WO-1) W2 - Chief Warrant Officer 2 (CW-2) W3 - Chief Warrant Officer 3 (CWO-3) W4 - Chief Warrant Officer 4 (CWO-4) W5 - Chief Warrant Officer 5 (CWO-5) NOTE: All Warrant Officers, regardless of gender, are addressed as "Mister." EUROPEAN NOBILITY Knight (Dame) Baronet (Baronetess) Baron (Baroness) Viscount (Viscontess) Earle/Count (Contess) Marquess/Margrave (Marchioness/Margravine) Duke (Duchess) Prince (Princess) Prince-Elector (Electress) [Holy Roman Empire only] Grand Duke/Grand Prince (Grand Duchess/Grand Princess) Archduke (Archduchess) [Holy Roman Empire only] King (Queen) Emperor (Empress) Note: King/Queen and Emperor/Empress are usually a matter of the size of the nation they rule; While Emperors are more powerful (and therefore preeminent) than Kings, the titles do not typically coexist within a single nation. DIPLOMATIC RANKS: * Ambassador (High Commissioner in Commonwealth missions); Ambassador at large * Minister * Minister-Counselor * Counselor * First Secretary * Second Secretary * Third Secretary * Attaché * Assistant Attaché NOTE BY SLYEN: Might want to make a note on the Army Enlisted. A Corporal is above a Specialist and is considered an NCO. Pretty much he is a temporary leader though, holding the rank until he can be promoted or a new Sergeant takes the position he is filling in for.