| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Army (Infantry) with the new title Private. |
| 1 |
22 |
Given a special assignment or duty in Oswald Carson's unit. |
| 1 |
22 |
Promoted to Army (Infantry) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Army (Infantry). |
| 2 |
26 |
Commanding officer takes an interest in Oswald Carson's career. |
| 2 |
26 |
Attempt at commissioned failed. |
| 2 |
26 |
Promoted to Army (Infantry) rank 2 with the new title Corporal. |
| 3 |
26 |
Continued as Army (Infantry). |
| 3 |
28 |
Advanced training in a specialist field |
| 3 |
30 |
Attempt at commissioned failed. |
| 3 |
30 |
Promoted to Army (Infantry) rank 3 with the new title Lance Sergeant. |
| 4 |
30 |
Continued as Army (Infantry). |
| 4 |
33 |
Thrown into a brutal ground war |
| 4 |
34 |
Promoted to Army (Infantry) rank 4 with the new title Sergeant. |