sentences:  On April 10, 1777, Cochran was made Physician & Surgeon General of the Middle Department of the Medical Department of the Continental Army.Subsequently, he became Physician and Surgeon General of the Continental Army and Director General of the Hospitals of the United States (January 17, 1781 to 1783).Because of the infighting and other troubles of his three predecessors as Surgeon General, he is considered by some military medical historians as the "best of the Revolutionary period chief physicians".