| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Merchant Academy. |
| 1 |
18 |
Became a Drifter (Wanderer). |
| 1 |
22 |
Drafted into Line/Crew |
| 1 |
22 |
Promoted to Drifter (Wanderer) rank 1. |
| 2 |
22 |
Became a Navy (Line/Crew) with the new title Crewman. |
| 2 |
23 |
Advanced training in a specialist field. |
| 2 |
26 |
Promoted to Navy (Line/Crew) rank 1 with the new title Able Spacehand. |
| 3 |
26 |
Attempted to change assignments. |
| 3 |
26 |
Failed to qualify for Engineer/Gunner (Navy). |
| 3 |
26 |
Continued as Navy (Line/Crew). |
| 3 |
28 |
Special assignment or duty on board ship. |
| 3 |
30 |
Promoted to Navy (Line/Crew) rank 2 with the new title Petty Officer, 3rd class. |
| 4 |
30 |
Continued as Navy (Line/Crew). |
| 4 |
32 |
Commanding officer takes an interest in Billie Miles's career. |
| 4 |
34 |
Promoted to Navy (Line/Crew) rank 3 with the new title Petty Officer, 2nd class. |