McSween, although a non-participant, was the former partner of John Tunstall, and, along with
John Chisum, had organized and financially supported the Regulators. On July 15, 1878, McSween returned to Lincoln with about 41 additional supporters, ten of whom he put up in his home; while the rest found beds throughout the town. Shortly afterward, a large force hired by the "Murphy-Dolan" faction and led by Peppin, arrived in Lincoln, and surrounded the Regulators at McSween's house. The posse and the Regulators traded gunfire for much of that day. At least five Murphy-Dolan men were wounded in the initial exchange, while the Regulators suffered no casualties. They had either been summoned by frightened residents or by a report that a soldier had been wounded in Lincoln. At some point during the night of July 18–19, however, the McSween house was set afire. When McSween and the others attempted to flee the following morning, he and several other Regulators were shot and killed. Now under the leadership of Bonney and Jim French, the Regulators quickly reassessed their position, and forced an escape from the burning adobe house. and Charlie Crawford. ==Aftermath==