| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Marine Academy (Military Academy). |
| 1 |
18 |
Became a Drifter (Barbarian). |
| 1 |
22 |
Suffer from a life-threatening illness. |
| 2 |
22 |
Became a Army (Cavalry) with the new title Private. |
| 2 |
24 |
Given a special assignment or duty in Doc Anderson's unit. |
| 2 |
26 |
Promoted to Army (Cavalry) rank 1 with the new title Lance Corporal. |
| 3 |
26 |
Continued as Army (Cavalry). |
| 3 |
28 |
Given a special assignment or duty in Doc Anderson's unit. |
| 3 |
30 |
Promoted to Army (Cavalry) rank 2 with the new title Corporal. |
| 4 |
30 |
Continued as Army (Cavalry). |
| 4 |
34 |
Assigned to a planet with a hostile or wild environment. |
| 4 |
34 |
Promoted to Army (Cavalry) rank 3 with the new title Lance Sergeant. |