| Term |
Age |
History |
|---|
| 1 |
18 |
Entered Military Academy(Army Academy) |
| 1 |
19 |
Suffered a deep tragedy. |
| 1 |
19 |
Dropped out of military academy. |
| 2 |
19 |
Became a Drifter (Wanderer). |
| 2 |
22 |
Major Ahern do not know what happened to Major Ahern. There is a gap in Major Ahern's memory. |
| 3 |
22 |
Became a Marine (Star Marine) with the new title Marine. |
| 3 |
26 |
Commanding officer takes an interest in Major Ahern's career. |
| 3 |
26 |
Promoted to Marine (Star Marine) rank 1 with the new title Lance Corporal. |
| 4 |
26 |
Continued as Marine (Star Marine). |
| 4 |
27 |
On the front lines of a planetary assault and occupation. |
| 4 |
30 |
Promoted to Marine (Star Marine) rank 2 with the new title Corporal. |
| 5 |
30 |
Continued as Marine (Star Marine). |
| 5 |
32 |
Injured. Fully recovered. |