| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for University. |
| 1 |
18 |
Submitted to the draft. |
| 1 |
18 |
Became a Army (Cavalry) with the new title Private. |
| 1 |
19 |
Advanced training in a specialist field |
| 1 |
22 |
Attempt at commissioned failed. |
| 1 |
22 |
Promoted to Army (Cavalry) rank 1 with the new title Lance Corporal. |
| 2 |
22 |
Continued as Army (Cavalry). |
| 2 |
25 |
Surrounded and outnumbered by the enemy, Mack Boyd hold out until relief arrives. |
| 2 |
26 |
Promoted to Army (Cavalry) rank 2 with the new title Corporal. |
| 3 |
26 |
Continued as Army (Cavalry). |
| 3 |
29 |
Nearly killed. Fully recovered. |