All potential squad members begin as rookie recruits and as they gain experience on the various missions, they climb in rank. Each rank also has access to one or two class-dependent abilities. The rank hierarchy is as follows:
| Icon | Title |
|---|---|
 |
Rookie |
 |
Squaddie |
 |
Corporal |
| Sergeant | |
| Lieutenant | |
| Captain | |
| Major | |
| Colonel |