| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Star Marine) with the new title Marine. |
| 1 |
19 |
Assigned to the security staff of a space station. |
| 1 |
22 |
Attempt at commissioned failed. |
| 2 |
22 |
Continued as Marine (Star Marine). |
| 2 |
25 |
A mission goes disastrously wrong due to Brooklyn Cameron's commander’s error or incompetence, but Brooklyn Cameron survive. |
| 2 |
25 |
Cover for the commander and gain an Ally. |
| 2 |
26 |
Promoted to Marine (Star Marine) rank 1 with the new title Lance Corporal. |
| 3 |
26 |
Continued as Marine (Star Marine). |
| 3 |
27 |
Assigned to a black ops mission. |
| 3 |
30 |
Promoted to Marine (Star Marine) rank 2 with the new title Corporal. |
| 4 |
30 |
Voluntarily left Star Marine |
| 4 |
30 |
Became a Army (Infantry) with the new title Private. |
| 4 |
33 |
Advanced training in a specialist field |
| 4 |
34 |
Commissioned in Army (Infantry) with the new title Lieutenant. |
| 4 |
34 |
Promoted to Army (Infantry) officer rank 2 with the new title Captain. |
| 5 |
34 |
Continued as Army (Infantry). |
| 5 |
37 |
Surrounded and outnumbered by the enemy, Brooklyn Cameron hold out until relief arrives. |
| 5 |
38 |
Promoted to Army (Infantry) officer rank 3 with the new title Major. |
| 6 |
38 |
Continued as Army (Infantry). |
| 6 |
39 |
Assigned to a peacekeeping role. |