| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Navy (Engineer/Gunner) with the new title Crewman. |
| 1 |
19 |
Gained a contact. |
| 1 |
22 |
Promoted to Navy (Engineer/Gunner) rank 1 with the new title Able Spacehand. |
| 2 |
22 |
Continued as Navy (Engineer/Gunner). |
| 2 |
24 |
Advanced training in a specialist field. |
| 2 |
26 |
Promoted to Navy (Engineer/Gunner) rank 2 with the new title Petty Officer, 3rd class. |
| 3 |
26 |
Continued as Navy (Engineer/Gunner). |
| 3 |
30 |
Placed in the frozen watch (cryogenically stored on board ship) and revived improperly. |
| 3 |
30 |
Promoted to Navy (Engineer/Gunner) rank 3 with the new title Petty Officer, 2nd class. |
| 4 |
30 |
Continued as Navy (Engineer/Gunner). |
| 4 |
31 |
Display heroism in battle, saving the whole ship. |
| 4 |
34 |
Commissioned in Navy (Engineer/Gunner) with the new title Ensign. |
| 4 |
34 |
Forced to continue current assignment |
| 4 |
34 |
Promoted to Navy (Engineer/Gunner) officer rank 2 with the new title Sublieutenant. |
| 5 |
34 |
Continued as Navy (Engineer/Gunner). |
| 5 |
35 |
Commanding officer takes an interest in Oscar Halpine's career. |
| 5 |
38 |
Promoted to Navy (Engineer/Gunner) officer rank 3 with the new title Lieutenant. |