The Lincoln County War broke out following the murder of a merchant,
John Tunstall, that sparked the regional conflict. The Coes sided with the Lincoln County Regulators, part of the
Alexander McSween faction. The Regulators faced off against
Sheriff William J. Brady, and allied hired gunmen from the
Jesse Evans and the
John Kinney gangs. Coe was present during the
Gunfight at Blazer's Mill where
Buckshot Roberts was shot and killed by the Regulators. It is reported that Coe had attempted to convince Roberts to surrender before the shooting started. His cousin George supposedly fired the fatal shot, although that is disputed. Fellow Regulators
Charlie Bowdre,
John Middleton,
William H. "Billy the Kid" Bonney, and Scurlock were wounded in the shootout, while their leader,
Dick Brewer, was killed.
Arrest Frank Coe was captured on April 29, 1878, by a
posse led by
Evans, that included members of both the Evans gang and the
Seven Rivers Warriors. During the capture, Regulator
Frank McNab was killed, and Saunders was badly wounded. Coe escaped sometime prior to the
Battle of Lincoln which occurred in July of that year. ==Later years and death==