| Term | History |
| 1 | Became a Field Researcher at age 18 |
| 1 | Advanced training in a specialist field. |
| 1 | Promoted to rank 1 |
| 2 | Voluntarily left Field Researcher |
| 2 | Became a Infantry at age 22 |
| 2 | Is now a Private |
| 2 | Advanced training in a specialist field |
| 2 | Promoted to Infantry rank 1 |
| 2 | Is now a Lance Corporal |
| 3 | Continued as Infantry at age 26 |
| 3 | Commanding officer takes an interest in your career. |
| 3 | Promoted to Infantry rank 2 |
| 3 | Is now a Corporal |
| 4 | Continued as Infantry at age 30 |
| 4 | Thrown into a brutal ground war |
| 4 | Scarred. Fully recovered. |
| 4 | Promoted to Infantry rank 3 |
| 4 | Is now a Lance Sergeant |
| 5 | Voluntarily left Infantry |
| 5 | Became a Line/Crew at age 34 |
| 5 | Is now a Crewman |
| 5 | Vessel participates in a notable military engagement. |
| 5 | Promoted to Line/Crew rank 1 |
| 5 | Is now a Able Spacehand |
| 6 | Voluntarily left Line/Crew |
| 6 | Switched to Physician at age 38 |
| 6 | Work leads to a considerable breakthrough. |
| 6 | Promoted to rank 1 |
| 7 | Continued as Physician at age 42 |
| 7 | Make a breakthrough in your field. |
| 7 | Promoted to rank 2 |
| 8 | Continued as Physician at age 46 |
| 8 | Make a breakthrough in your field. |
| 9 | Continued as Physician at age 50 |
| 9 | Caught cheating in some fashion, advancing your career and research by stealing another’s work, using an alien device, taking a shortcut and so forth. |
| 9 | An expedition or voyage goes wrong, leaving you stranded in the wilderness. |
| 9 | Gain an Enemy |
| 9 | Promoted to rank 3 |
| 10 | Continued as Physician at age 54 |
| 10 | Refused to perform research that goes against your conscience. |
| 11 | Aging Crisis. Owe 50,000 for medical bills. |
| 11 | Continued as Physician at age 58 |
| 11 | Make a breakthrough in your field. |
| 11 | Forced to muster out. |
| 12 | Aging Crisis. Owe 20,000 for medical bills. |
| 12 | Retired at age 62 |
| 12 | Betrayal. Convert an Ally into a Rival or Enemy. |
| 13 | Aging Crisis. Owe 50,000 for medical bills. |
| 13 | Gained a contact. |
| 14 | Aging Crisis. Owe 20,000 for medical bills. |
| 14 | A romantic relationship deepens, possibly leading to marriage. Gain an Ally. |
| 15 | Aging Crisis. Owe 60,000 for medical bills. |
| 15 | Lost eye or limb. Owe 5,000 for medical bills. |
| 16 | Aging Crisis. Owe 20,000 for medical bills. |