| Term | History |
|---|
| 1 | Became a Scientist at age 18 |
| 1 | Make a breakthrough in your field. |
| 1 | Promoted to rank 1 |
| 2 | Continued as Scientist at age 22 |
| 2 | Work leads to a considerable breakthrough. |
| 2 | Promoted to rank 2 |
| 3 | Voluntarily left Scientist |
| 3 | Became a Marine Support at age 26 |
| 3 | Is now a Marine |
| 3 | A mission goes disastrously wrong due to your commander’s error or incompetence, but you survive. |
| 3 | Cover for the commander and gain an Ally. |
| 3 | Attempt at commissioned failed. |
| 3 | Promoted to Marine Support rank 1 |
| 3 | Is now a Lance Corporal |
| 4 | Continued as Marine Support at age 30 |
| 4 | Trapped behind enemy lines. |
| 4 | Promoted to Marine Support rank 2 |
| 4 | Is now a Corporal |
| 5 | Continued as Marine Support at age 34 |
| 5 | Advanced training in a specialist field |
| 5 | Promoted to Marine Support rank 3 |
| 5 | Is now a Lance Sergeant |
| 6 | Continued as Marine Support at age 38 |
| 6 | Assigned to the security staff of a space station. |
| 6 | Promoted to Marine Support rank 4 |
| 6 | Is now a Sergeant |
| 7 | Continued as Marine Support at age 42 |
| 7 | Advanced training in a specialist field |
| 7 | Promoted to Marine Support rank 5 |
| 7 | Is now a Gunnery Sergeant |
| 8 | Continued as Marine Support at age 46 |
| 8 | Assigned to an assault on an enemy fortress. |
| 8 | Promoted to Marine Support rank 6 |
| 8 | Is now a Sergeant Major |
| 9 | Continued as Marine Support at age 50 |
| 9 | Commanding officer takes an interest in your career. |
| 9 | Promoted to Marine Support rank 7 |
| 10 | Continued as Marine Support at age 54 |
| 10 | Birth or Death involving a family member or close friend. |
| 10 | Promoted to Marine Support rank 8 |
| 10 | Forced to muster out. |