Basically I am looking for the right expression for a specific set (usually 2-6) of teams (a team is a group of individuals controlled by one player) in a tounament-like game. The team-set is a subset of a larger number of existing teams e.g.: there exist 10 teams t1, ..., t10. Team-Set 1 is {t1, t3, t7}, team-Set 2 is {t1, t5, t8, t10} and so on. What would be a good expression for "team-set" in a somewhat-military (fun-based combat) game context?
The teams of the set fight against each other, and not together (alongside each other). So I am looking for a somewhat confrontative term.