| Term | History |
|---|
| 1 | Became a Line/Crew at age 18 |
| 1 | Is now a Crewman |
| 1 | Severely injured. |
| 2 | Became a Marine Support at age 22 |
| 2 | Is now a Marine |
| 2 | Assigned to the security staff of a space station. |
| 2 | Attempt at commissioned failed. |
| 2 | Promoted to Marine Support rank 1 |
| 2 | Is now a Lance Corporal |
| 3 | Continued as Marine Support at age 26 |
| 3 | Commanding officer takes an interest in your career. |
| 3 | Promoted to Marine Support rank 2 |
| 3 | Is now a Corporal |
| 4 | Continued as Marine Support at age 30 |
| 4 | A mission goes disastrously wrong due to your commander’s error or incompetence, but you survive. |
| 4 | Report commander and gain an Enemy. |
| 4 | Promoted to Marine Support rank 3 |
| 4 | Is now a Lance Sergeant |
| 5 | Continued as Marine Support at age 34 |
| 5 | Trapped behind enemy lines. |
| 5 | Promoted to Marine Support rank 4 |
| 5 | Is now a Sergeant |
| 6 | Voluntarily left Marine Support |
| 6 | Switched to Ground Assault at age 38 |
| 6 | Advanced training in a specialist field |
| 6 | Promoted to Ground Assault rank 5 |
| 6 | Is now a Gunnery Sergeant |
| 7 | Continued as Ground Assault at age 42 |
| 7 | Advanced training in a specialist field |
| 7 | Promoted to Ground Assault rank 6 |
| 7 | Is now a Sergeant Major |
| 8 | Continued as Ground Assault at age 46 |
| 8 | Trapped behind enemy lines. |
| 8 | Promoted to Ground Assault rank 7 |
| 9 | Continued as Ground Assault at age 50 |
| 9 | On the front lines of a planetary assault and occupation. |
| 9 | Promoted to Ground Assault rank 8 |