Officer Rank Chart of the US Marines
| Rank Chart for Officer Marines: |  |
| Rank Acronym | Rank | Rank Code | |
 2ndlt |
Second Lieutenant | O-1 |  |
| 1stlt |
First Lieutenant | O-2 |  |
| capt |
Captain | O-3 |  |
| major |
Major | O-4 |  |
| ltcol |
Lieutenant Colonel | O-5 |  |
| col |
Colonel | O-6 |  |
| bgen |
Brigadier General | O-7 |  |
| mgen |
Major General | O-8 |  |
| ltgen |
Lieutenant General | O-9 |  |
| gen |
General | O-10 |  |