In 1950 Truman appointed General Walter Bedell Smith as the fourth director of Central Intelligence (DCI). The CIA became established institutionally within the United States Intelligence Community. DCI Smith merged the OSO (being mainly espionage, and newly led by Helms) and the rapidly expanding Office of Policy Coordination under Wisner (covert operations) to form a new unit to be managed by the deputy director for plans (DDP). Wisner led the Directorate for Plans from 1952 to 1958, with Helms as his "Chief of Operations".