| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Spacer Community. |
| 1 |
18 |
Submitted to the draft. |
| 1 |
18 |
Became a Navy (Line/Crew) with the new title Crewman. |
| 1 |
19 |
Advanced training in a specialist field. |
| 1 |
22 |
Attempt at commissioned failed. |
| 1 |
22 |
Forced to continue current assignment |
| 1 |
22 |
Promoted to Navy (Line/Crew) rank 1 with the new title Able Spacehand. |
| 2 |
22 |
Continued as Navy (Line/Crew). |
| 2 |
24 |
Special assignment or duty on board ship. |
| 2 |
26 |
Promoted to Navy (Line/Crew) rank 2 with the new title Petty Officer, 3rd class. |