| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Star Marine (Marine). |
| 1 |
18 |
Submitted to the draft. |
| 1 |
18 |
Became a Navy (Engineer/Gunner) with the new title Crewman. |
| 1 |
21 |
Birth or Death involving a family member or close friend. |
| 1 |
22 |
Attempt at commissioned failed. |
| 2 |
22 |
Continued as Navy (Engineer/Gunner). |
| 2 |
26 |
Pauline Thomas is blamed for an accident that causes the death of several crew members. Pauline Thomas's guilt drives Pauline Thomas to excel. |
| 3 |
26 |
Continued as Navy (Engineer/Gunner). |
| 3 |
27 |
Advanced training in a specialist field. |
| 3 |
30 |
Promoted to Navy (Engineer/Gunner) rank 1 with the new title Able Spacehand. |