Change in command of the regiment occurred for the third time in late 1780. Under continual pressure to maintain sufficient troop strength in the unit, regimental commander Capt. Thomas Beall ran afoul of army regulations and Western Department commander Brodhead by approving the enlistment of a British prisoner of war in February 1780. Beall tried to rectify his lapse in judgment by discharging the recruit, although after he had already been given his recruitment bounty and service clothes. On August 14, 1780, at Fort Pitt, Captain Beall was tried by court-martial, found guilty of "discharging a Soldier after having been duly inlisted and receiving his regimental cloathing through private and interested views thereby defrauding the United States," and on October 13, was dismissed from the service. Capt. Adamson Tannehill succeeded Beall as commander of the regiment for the remaining few months of the unit's existence.