| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Marine Support) with the new title Marine. |
| 1 |
19 |
Assigned to the security staff of a space station. |
| 1 |
22 |
Promoted to Marine (Marine Support) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Marine (Marine Support). |
| 2 |
24 |
On the front lines of a planetary assault and occupation. |
| 2 |
26 |
Promoted to Marine (Marine Support) rank 2 with the new title Corporal. |
| 3 |
26 |
Voluntarily left Marine Support |
| 3 |
26 |
Became a Army (Cavalry) with the new title Private. |
| 3 |
30 |
Surrounded and outnumbered by the enemy, Walker Ocallaghan hold out until relief arrives. |
| 3 |
30 |
Promoted to Army (Cavalry) rank 1 with the new title Lance Corporal. |