| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Ground Assault) with the new title Marine. |
| 1 |
20 |
On the front lines of a planetary assault and occupation. |
| 1 |
22 |
Promoted to Marine (Ground Assault) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Marine (Ground Assault). |
| 2 |
23 |
Advanced training in a specialist field |
| 2 |
26 |
Promoted to Marine (Ground Assault) rank 2 with the new title Corporal. |
| 3 |
26 |
Attempted to change assignments. |
| 3 |
26 |
Failed to qualify for Marine Support (Marine). |
| 3 |
26 |
Continued as Marine (Ground Assault). |
| 3 |
29 |
Commanding officer takes an interest in Truman Shackley's career. |
| 3 |
30 |
Promoted to Marine (Ground Assault) rank 3 with the new title Lance Sergeant. |
| 4 |
30 |
Continued as Marine (Ground Assault). |
| 4 |
31 |
Advanced training in a specialist field |
| 4 |
34 |
Promoted to Marine (Ground Assault) rank 4 with the new title Sergeant. |
| 5 |
34 |
Continued as Marine (Ground Assault). |
| 5 |
37 |
On the front lines of a planetary assault and occupation. |
| 5 |
38 |
Forced to muster out. |
| 6 |
38 |
Failed to qualify for Surveyor (Scout). |
| 6 |
38 |
Submitted to the draft. |
| 6 |
38 |
Became a Navy (Engineer/Gunner) with the new title Crewman. |
| 6 |
40 |
Display heroism in battle, saving the whole ship. |
| 6 |
42 |
Commissioned in Navy (Engineer/Gunner) with the new title Ensign. |
| 6 |
42 |
Promoted to Navy (Engineer/Gunner) officer rank 2 with the new title Sublieutenant. |