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There are ten (10) ranks for a commissioned officer in the U.S. Army. Upon graduation from OCS (Officer Candidate School), the officer is commission a Second Lieutenant. Each rank has a different insignia that is worn on the top of the shoulder of their uniform.
| Pay Grade | Rank | Insignia |
|---|---|---|
| O-1 | Second Lieutenant | Single Gold Bar |
| O-2 | First Lieutenant | Single Silver Bar |
| O-3 | Captain | Double Silver Bar |
| O-4 | Major | Gold Oak Leaf |
| O-5 | Lieutenant Colonel | Silver Oak Leaf |
| O-6 | Colonel | Silver Eagle |
| O-7 | Brigadier General | One Silver Star |
| O-8 | Major General | Two Silver Stars |
| O-9 | Lieutenant General | Three Silver Stars |
| O-10 | General | Four Silver Stars |
| O-10 | General Of The Army | Five Silver Stars |
There are five (5) ranks for a warrant officer in the U.S. Army. Warrant officers are specialists. Warrant officers are only commissioned upon promotion to Chief Warrant Officer; until then, they serve under authority of a warrant. The insignia for each rank is a single silver bar with different black shapes on it.
| Pay Grade | Rank | Insignia |
|---|---|---|
| W-1 | Warrant Officer | Single Silver Bar, One Solid Black Square |
| W-2 | Chief Warrant Officer | Single Silver Bar, Two Solid Black Squares |
| W-3 | Chief Warrant Officer | Single Silver Bar, Three Solid Black Squares |
| W-4 | Chief Warrant Officer | Single Silver Bar, Four Solid Black Squares |
| W-5 | Master Warrant Officer | Single Silver Bar, Four Open Black Rectangle |