Each class specializes in a certain aspect of the game, and an effective team will balance players out using all four classes, such as a soldier for blasting through enemy defenses, a medic for supporting the team and keeping them alive (Soldier making up for the lack of firepower with medics, medics making up for the lack of health), a Lieutenant to resupply teammates with ammo (especially soldiers) and engineers to complete the objective, having their way cleared by the soldier which is then supported by the Lieutenant. Return to Castle Wolfenstein was the first multiplayer FPS game to utilize classes with varying equipment and abilities, similar to gameplay seen in role-playing games.