| Term |
Age |
History |
|---|
| 1 |
12 |
Entered Military Academy(Army Academy) |
| 1 |
15 |
Spent the college years partying. |
| 1 |
16 |
Graduated with honors. |
| 2 |
16 |
Became a Army (Infantry) with the new title Private. |
| 2 |
16 |
Commissioned in Army (Infantry) with the new title Lieutenant. |
| 2 |
19 |
Advanced training in a specialist field |
| 2 |
20 |
Promoted to Army (Infantry) officer rank 2 with the new title Captain. |
| 3 |
20 |
Continued as Army (Infantry). |
| 3 |
22 |
Commanding officer takes an interest in Bertie Brook's career. |
| 3 |
24 |
Promoted to Army (Infantry) officer rank 3 with the new title Major. |