| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Marine Support) with the new title Marine. |
| 1 |
22 |
On the front lines of a planetary assault and occupation. |
| 1 |
22 |
Attempt at commissioned failed. |
| 1 |
22 |
Promoted to Marine (Marine Support) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Marine (Marine Support). |
| 2 |
23 |
A mission goes wrong and Chesley Carlson is stranded behind enemy lines. Ejected from the service. |
| 2 |
26 |
Promoted to Marine (Marine Support) rank 2 with the new title Corporal. |
| 3 |
26 |
Continued as Marine (Marine Support). |
| 3 |
30 |
Assigned to an assault on an enemy fortress. |
| 3 |
30 |
Promoted to Marine (Marine Support) rank 3 with the new title Lance Sergeant. |
| 4 |
30 |
Attempted to change assignments. |
| 4 |
30 |
Switched to Marine (Star Marine) with previous rank. |
| 4 |
33 |
A mission goes disastrously wrong due to Chesley Carlson's commander’s error or incompetence, but Chesley Carlson survive. |
| 4 |
33 |
Report commander and gain an Enemy. |
| 4 |
34 |
Promoted to Marine (Star Marine) rank 4 with the new title Sergeant. |