At odds with Army doctors, Dix feuded with them over control of medical facilities and the hiring and firing of nurses. Many doctors and surgeons did not want any female nurses in their hospitals. To solve the impasse, the War Department introduced Order No. 351 in October 1863. It granted both the Surgeon General (Joseph K. Barnes) and the Superintendent of Army Nurses (Dix) the power to appoint female nurses. However, it gave doctors the power of assigning employees and volunteers to hospitals. This relieved Dix of direct operational responsibility. As superintendent, Dix implemented the Federal army nursing program, in which over 3,000 women would eventually serve. Meanwhile, her influence was being eclipsed by other prominent women such as Dr. Mary Edwards Walker and Clara Barton. She resigned in August 1865 and later considered this "episode" in her career a failure. Although hundreds of Catholic nuns successfully served as nurses, Dix distrusted them; her anti-Catholicism undermined her ability to work with Catholic nurses, lay or religious.