Warband

From HammerWiki

Warbands are groups (sometimes known as Raids) of more than 6 and up to 48 players that can be formed in WAR. Warband members are able to target each other for assistance as well as see visually where other members are on the user-interface maps.

Members of a Warband also share Experience points, renown, loot rolls and money. Necessitating that they work together.