With the start of
World War II in Europe, the U.S. Navy began to plan for the possibility of war in the Atlantic as well as the Pacific. On 1 February 1941, General Order 143 was issued, abolishing the "United States Fleet" organization. In its place, the U.S. Atlantic Fleet and the U.S. Pacific Fleet were re-established, each under its own commander in chief. The Asiatic Fleet remained an independent organization as before. The additional title of Commander in Chief, United States Fleet was given to one of the three fleet commanders (Atlantic, Pacific, or Asiatic) in the event of two or more fleets operating together. Except for this provision, the individual commanders in chief were responsible directly to the
President of the United States and the
Secretary of the Navy. Rear Admiral
Husband E. Kimmel was appointed the Commander in Chief, United States Fleet (CINCUS) and the Commander in Chief, United States Pacific Fleet (CINCPAC) on 1 February 1941, carrying the temporary rank of admiral starting on that date. Kimmel was relieved as the CINCUS / CINCPAC on 17 December 1941, shortly after the devastating Japanese
attack on Pearl Harbor. On the following day, by of 18 December 1941, the position of Commander in Chief, United States Fleet (COMINCH) was redefined, and given operational command over the Atlantic, Pacific, and Asiatic Fleets, as well as all naval coastal forces. The acronym change from CINCUS to COMINCH was suggested by Admiral
Ernest J. King, who feared that the pronunciation of the post would be demoralizing in the wake of the Pearl Harbor attack. On 20 December, Admiral
Ernest J. King was assigned as the COMINCH. One important difference from the previous post of CINCUS was that Admiral King insisted that his headquarters would always be in
Washington, D.C., rather than with the Fleet. Dividing command of the Navy between the COMINCH, Admiral King, and the
Chief of Naval Operations (CNO), Admiral
Harold R. Stark, did not prove to be very effective. President
Franklin D. Roosevelt addressed this problem with his of 12 March 1942, which designated that the offices of the CNO and COMINCH would be held by a single officer, and Admiral King was selected to be CNO in addition to being COMINCH. King relieved Stark as CNO on 29 March 1942, and wore both of these "hats" for the remainder of the war. ==Abolition==