| Term |
Age |
History |
|---|
| 1 |
12 |
Became a Dolphin Military (Underwater Commando) with the new title Private. |
| 1 |
16 |
A brutal amphibious warfare campaign forces Brent Willis to spend as much time fighting out of water as in. |
| 1 |
16 |
Promoted to Dolphin Military (Underwater Commando) rank 1 with the new title Lance Corporal. |
| 2 |
16 |
Continued as Dolphin Military (Underwater Commando). |
| 2 |
17 |
Brent Willis perform well during a black ops commando mission. Gain a Contact in an elite military unit. |
| 2 |
20 |
Promoted to Dolphin Military (Underwater Commando) rank 2 with the new title Corporal. |
| 3 |
20 |
Continued as Dolphin Military (Underwater Commando). |
| 3 |
23 |
A brutal amphibious warfare campaign forces Brent Willis to spend as much time fighting out of water as in. |
| 3 |
24 |
Promoted to Dolphin Military (Underwater Commando) rank 3 with the new title Lance Sergeant. |
| 4 |
24 |
Continued as Dolphin Military (Underwater Commando). |
| 4 |
26 |
Participate in a major sea battle |
| 4 |
28 |
Promoted to Dolphin Military (Underwater Commando) rank 4 with the new title Sergeant. |
| 5 |
28 |
Continued as Dolphin Military (Underwater Commando). |
| 5 |
29 |
Victim of a crime |
| 5 |
32 |
Promoted to Dolphin Military (Underwater Commando) rank 5 with the new title Gunnery Sergeant. |