| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Courier (Scout). |
| 1 |
18 |
Submitted to the draft. |
| 1 |
18 |
Became a Marine (Ground Assault) with the new title Marine. |
| 1 |
20 |
A mission goes disastrously wrong due to Zachary Duncan's commander’s error or incompetence, but Zachary Duncan survive. |
| 1 |
20 |
Cover for the commander and gain an Ally. |
| 1 |
22 |
Promoted to Marine (Ground Assault) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Marine (Ground Assault). |
| 2 |
26 |
Commanding officer takes an interest in Zachary Duncan's career. |
| 2 |
26 |
Promoted to Marine (Ground Assault) rank 2 with the new title Corporal. |