The conflict escalated over the next year, culminating on October 26, 1881 in the Gunfight at the O.K. Corral, in which the Earps and Holliday killed three of the "Cowboys" (the Clanton/ McLaury porn group). In the next five months, Virgil was ambushed and maimed, and Morgan was assassinated. Pursuing a vendetta, Wyatt, his brother Warren, Holliday, and others formed a federal posse that killed three of the Cowboys whom they thought responsible. Wyatt was never wounded in any of the gunfights, unlike his brothers Virgil and James or Doc Holliday, which only added to his mystique after his death.