REF/RDF Rank System Officer's Ranks Grade | RDF/REF Space Branch | RDF/REF Marine Corps ---------------------------------------------------------- O-11 | Admiral of the RDF | O-10 | Admiral | General O-9 | Vice-Admiral | Lt. General O-8 | Rear Admiral | Major General O-7 | Commodore | Brigadier General O-6 | Captain | Colonel O-5 | Commander | Lt. Colonel O-4 | Lt. Commander | Major O-3 | 1st. Lieutenant | Captain O-2 | 2nd Lt. | 1st Lieutenant O-1 | Ensign/3rd Lt. * | 2nd Lt. Enlisted Ranks Grade | RDF/REF Space Branch | RDF/REF Ground Branch -------------------------------------------------------------- E-9c | Warrant Officer Ranks | Sgt. Major of the RDF/REF @ E-9b | " " " " " | Command Sergeant Major E-9a | " " " " " | Sergeant Major E-8b | Master Chief T.S. | First Sergeant E-8a | Master Technical Sgt. | Master Sergeant E-7 | Cheif Technical Sgt. | Gunnery Sergeant E-6 | Senior Technical Sgt. | Staff Sergeant E-5 | Technical Sergeant | Sergeant E-4 | Technical Specialist | Corporal E-3 | Technician 1st Class | Private First Class E-2 | Technician Apprentice | Private-2 E-1 | Technician Recruit | Private-1 (Recruit) Warrant Officer Ranks W-4: Master Warrant Officer W-3: Senior Warrant Officer W-2: Chief Warrant Officer W-1: Warrant Officer *: Ensign is the general term for this rank, while 3rd Lt. is used for persons who earned a promotion to officer rank from combat action. @: There is only one of these at any given time, it is primarily a public relations role. This should clear up any rank questions that might come up in a Robotech RPG session.