| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Marine Support) with the new title Marine. |
| 1 |
21 |
A mission goes wrong and Zeb Sullivan is stranded behind enemy lines. Ejected from the service. |
| 2 |
21 |
Became a Scout (Explorer). |
| 2 |
25 |
Gained a contact. |
| 3 |
25 |
Attempted to change assignments. |
| 3 |
25 |
Failed to qualify for Surveyor (Scout). |
| 3 |
25 |
Continued as Scout (Explorer). |
| 3 |
28 |
Perform an exemplary service for the scouts. |
| 3 |
29 |
Promoted to Scout (Explorer) rank 1 with the new title Scout. |
| 4 |
29 |
Voluntarily left Explorer |
| 4 |
29 |
Became a Drifter (Scavenger). |
| 4 |
33 |
Good fortune |
| 4 |
33 |
Promoted to Drifter (Scavenger) rank 1. |
| 5 |
33 |
Continued as Drifter (Scavenger). |
| 5 |
34 |
Survived a risky adventure but gained nothing. |
| 5 |
37 |
Forced to muster out. |