| Term | History |
| 1 | Became a Flight at age 18 |
| 1 | Is now a Crewman |
| 1 | Vessel participates in a notable military engagement. |
| 1 | Promoted to Flight rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Voluntarily left Flight |
| 2 | Became a Barbarian at age 22 |
| 2 | Spend time with an alien race. Gain a contact. |
| 2 | Promoted to rank 1 |
| 3 | Continued as Barbarian at age 26 |
| 3 | Drafted into Army |
| 4 | Became a Army Support at age 30 |
| 4 | Is now a Private |
| 4 | Betrayal. Convert an Ally into a Rival or Enemy. |
| 4 | Attempt at commissioned failed. |
| 4 | Promoted to Army Support rank 1 |
| 4 | Is now a Lance Corporal |
| 5 | Continued as Army Support at age 34 |
| 5 | Good fortune |
| 6 | Continued as Army Support at age 38 |
| 6 | Assigned to a peacekeeping role. |
| 6 | Attempt at commissioned failed. |
| 7 | Continued as Army Support at age 42 |
| 7 | Lost eye or limb. Fully recovered. Owe 2,500 for medical bills. |
| 8 | Switched to Engineer/Gunner at age 46 |
| 8 | Vessel participates in a diplomatic mission. |
| 8 | Attempt at commissioned failed. |
| 8 | Promoted to Engineer/Gunner rank 2 |
| 8 | Is now a Petty Officer, 3rd class |
| 9 | Continued as Engineer/Gunner at age 50 |
| 9 | Vessel participates in a notable military engagement. |
| 9 | Attempt at commissioned failed. |
| 9 | Promoted to Engineer/Gunner rank 3 |
| 9 | Is now a Petty Officer, 2nd class |
| 10 | Continued as Engineer/Gunner at age 54 |
| 10 | Birth or Death involving a family member or close friend. |
| 10 | Commissioned in Navy/Engineer/Gunner |
| 10 | Is now a Ensign |
| 11 | Aging Crisis. Owe 10,000 for medical bills. |
| 11 | Continued as Engineer/Gunner at age 58 |
| 11 | Betrayal. Convert an Ally into a Rival or Enemy. |
| 11 | Forced to muster out. |
| 12 | Aging Crisis. Owe 50,000 for medical bills. |