On 22 January 1946, US President Harry S Truman issued the Directive on Coordination of Foreign Intelligence Activities. Henceforth, the National Intelligence Authority, a body he set up, would be responsible for foreign intelligence missions.

The board of the directorate would include US Secretary of State James Byrnes, US Secretary of War Robert Patterson, US Secretary of the Navy John Sullivan, and Truman appointee, Fleet Admiral William D Leahy as the president’s personal representative.

One of the primary tasks of the board was to form a Central Intelligence Group (CIG) by the aforementioned departments. The Director of Central Intelligence would be responsible for controlling the collection and distribution of intelligence, as well as its assessment. Rear Admiral Sidney Souers was appointed the first Director of Central Intelligence. At a State Dinner held at the White House on 24 January 1946, Truman presented Admirals Leahy and Souers with black hats, black cloaks, and wooden daggers.

Admiral Sidney W. Souers (right) with officers and two captured Nazi officers aboard the Coast Guard cutter USS Icarus off the coast of Charleston, South Carolina. 10 April 1942. United States Navy, Harry S. Truman Library & Museum.
© Public Domain
On 27 July 1947, President Truman signed into law the National Security Act of 1947, creating a post-war national security framework, thus reorganising the Central Intelligence Group into the Central Intelligence Agency.

Sources: 

The newspaper "Pravda", No. 23 (10105) from 27 January 1946

Records compiled by Fleet Admiral William Daniel Leahy

The Public Papers of the Presidents of the United States: Harry S. Truman