Classes (EU2012)

Soldiers in X-COM: Enemy Unknown are divided into classes, where each class has unique abilities (a.k.a. "perks"). On the first level up from Rookie to Squaddie the soldier gets assigned a random class with an initial ability. As they level up soldiers get to choose one of two abilites (with some exceptions) on each level to a total of 6 more (7 including the Squaddie rank).

Rookie Squaddie Corporal Sergeant Lieutenant Captain Major Colonel