| Term | History |
|---|
| 1 | Became a Engineer/Gunner at age 18 |
| 1 | Is now a Crewman |
| 1 | Advanced training in a specialist field |
| 1 | Promoted to Engineer/Gunner rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Continued as Engineer/Gunner at age 22 |
| 2 | Advanced training in a specialist field |
| 2 | Promoted to Engineer/Gunner rank 2 |
| 2 | Is now a Petty Officer, 3rd class |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 3 | Promoted to Engineer/Gunner rank 3 |
| 3 | Is now a Petty Officer, 2nd class |
| 4 | Continued as Engineer/Gunner at age 30 |
| 4 | Advanced training in a specialist field |
| 4 | Promoted to Engineer/Gunner rank 4 |
| 4 | Is now a Petty Officer, 1st class |
| 5 | Continued as Engineer/Gunner at age 34 |
| 5 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 5 | Promoted to Engineer/Gunner rank 5 |
| 5 | Is now a Chief Petty Officer |
| 6 | Continued as Engineer/Gunner at age 38 |
| 6 | Vessel participates in a diplomatic mission. |
| 6 | Promoted to Engineer/Gunner rank 6 |
| 6 | Is now a Master Chief |
| 7 | Voluntarily left Engineer/Gunner |
| 7 | Became a Star Marine at age 42 |
| 7 | Is now a Marine |
| 7 | On the front lines of a planetary assault and occupation. |
| 7 | Promoted to Star Marine rank 1 |
| 7 | Is now a Lance Corporal |
| 8 | Continued as Star Marine at age 46 |
| 8 | Assigned to a black ops mission. |
| 8 | Promoted to Star Marine rank 2 |
| 8 | Is now a Corporal |
| 9 | Continued as Star Marine at age 50 |
| 9 | On the front lines of a planetary assault and occupation. |
| 9 | Promoted to Star Marine rank 3 |
| 9 | Is now a Lance Sergeant |