| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Star Marine) with the new title Marine. |
| 1 |
20 |
A mission goes disastrously wrong due to Gerald Brewer's commander’s error or incompetence, but Gerald Brewer survive. |
| 1 |
20 |
Cover for the commander and gain an Ally. |
| 1 |
22 |
Promoted to Marine (Star Marine) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Attempted to change assignments. |
| 2 |
22 |
Switched to Marine (Ground Assault) with previous rank. |
| 2 |
23 |
Commanding officer takes an interest in Gerald Brewer's career. |
| 3 |
26 |
Continued as Marine (Ground Assault). |
| 3 |
29 |
Assigned to a black ops mission. |
| 3 |
30 |
Promoted to Marine (Ground Assault) rank 2 with the new title Corporal. |