Faction
Factions are Groups of people or units that have similar interests and fight together. For example the Brotherhood of the Falcon, Elite Bloodfalcons, and the Dark Angels have often come together to become the Triad. The Triad while not a Unit is a faction. Often on the battlefield factions will engage each other in large scale epic battles. Over the years some of these faction battles have been: Good vs. Evil, Triad vs. The World, Ohio vs, Illinois vs, Pirates vs. Ninja's, and Horde Vs. Alliance