| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Marine (Star Marine) 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 (Star Marine) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Marine (Star Marine). |
| 2 |
24 |
Assigned to a black ops mission. |
| 2 |
26 |
Promoted to Marine (Star Marine) rank 2 with the new title Corporal. |
| 3 |
26 |
Continued as Marine (Star Marine). |
| 3 |
30 |
Commanding officer takes an interest in Orion Davis's career. |
| 3 |
30 |
Promoted to Marine (Star Marine) rank 3 with the new title Lance Sergeant. |
| 4 |
30 |
Continued as Marine (Star Marine). |
| 4 |
34 |
Assigned to an assault on an enemy fortress. |
| 4 |
34 |
Promoted to Marine (Star Marine) rank 4 with the new title Sergeant. |
| 5 |
34 |
Attempted to change assignments. |
| 5 |
34 |
Switched to Marine (Ground Assault) with previous rank. |
| 5 |
35 |
On the front lines of a planetary assault and occupation. |
| 5 |
38 |
Promoted to Marine (Ground Assault) rank 5 with the new title Gunnery Sergeant. |
| 6 |
38 |
Continued as Marine (Ground Assault). |
| 6 |
40 |
Betrayal. Convert an Ally into a Rival or Contact into an Enemy. |
| 6 |
42 |
Promoted to Marine (Ground Assault) rank 6 with the new title Sergeant Major. |
| 7 |
42 |
Attempted to change assignments. |
| 7 |
42 |
Failed to qualify for Marine Support (Marine). |
| 7 |
42 |
Continued as Marine (Ground Assault). |
| 7 |
43 |
Trapped behind enemy lines. |
| 7 |
46 |
Promoted to Marine (Ground Assault) rank 7. |