Star Trek II, III, IV, V, VI
| Insignia | Starfleet Rank | Marine Rank (Equivalent) |
| Flag Officer Ranks | ||
 | Fleet Admiral | Field Marshall |
 | Admiral | General |
 | Vice Admiral | Lieutenant General |
 | Rear Admiral | Major General |
 | Commodore | Brigadier General |
| Commissioned Officer Ranks | ||
 | Fleet Captain | Brigadier |
 | Captain | Colonel |
 | Commander | Lieutenant Colonel |
 | Lieutenant Commander | Major |
 | Lieutenant | Captain |
 | Lieutenant (Junior Grade) | Lieutenant |
 | Ensign | 2nd Lieutenant |
| Enlisted Officer Ranks | ||
 | Master Chief Petty Officer | Chief Warrant Officer |
 | Senior Chief Petty Officer | Master Warrant Officer |
 | Chief Petty Officer | Warrant Officer |
 | Petty Officer, First Class | Sergeant |
 | Petty Officer, Second Class | Corporal |
 | Able Seaman | Private |
The officer ranks are worn on right-shoulder and the left-sleeve.
SOURCE: Star Trek Encyclopedia (Updated & Expanded Ed.)