| Term | History |
|---|
| 1 | Became a Ground Assault at age 18 |
| 1 | Is now a Marine |
| 1 | Trapped behind enemy lines. |
| 1 | Promoted to Ground Assault rank 1 |
| 1 | Is now a Lance Corporal |
| 2 | Continued as Ground Assault at age 22 |
| 2 | On the front lines of a planetary assault and occupation. |
| 2 | Promoted to Ground Assault rank 2 |
| 2 | Is now a Corporal |
| 3 | Continued as Ground Assault at age 26 |
| 3 | Assigned to a black ops mission. |
| 3 | Promoted to Ground Assault rank 3 |
| 3 | Is now a Lance Sergeant |
| 4 | Continued as Ground Assault at age 30 |
| 4 | Commanding officer takes an interest in your career. |
| 4 | Promoted to Ground Assault rank 4 |
| 4 | Is now a Sergeant |
| 5 | Continued as Ground Assault at age 34 |
| 5 | On the front lines of a planetary assault and occupation. |
| 5 | Promoted to Ground Assault rank 5 |
| 5 | Is now a Gunnery Sergeant |
| 6 | Voluntarily left Ground Assault |
| 6 | Became a Cavalry at age 38 |
| 6 | Is now a Private |
| 6 | Given a special assignment or duty in your unit. |
| 6 | Promoted to Cavalry rank 1 |
| 6 | Is now a Lance Corporal |
| 7 | Voluntarily left Cavalry |
| 7 | Became a Line/Crew at age 42 |
| 7 | Is now a Crewman |
| 7 | Vessel participates in a diplomatic mission. |
| 7 | Attempt at commissioned failed. |
| 7 | Promoted to Line/Crew rank 1 |
| 7 | Is now a Able Spacehand |
| 8 | Continued as Line/Crew at age 46 |
| 8 | Vessel participates in a diplomatic mission. |
| 8 | Gain a contact. |
| 9 | Continued as Line/Crew at age 50 |
| 9 | Special assignment or duty on board ship. |