The acronym CINCUS, pronounced "sink us", was used for the Commander in Chief, United States Fleet.
This was replaced by COMINCH in December, 1941, under the Executive Order 8984, when it was redefined and given operational command over the Atlantic, Pacific, and Asiatic Fleets, as well as all naval coastal forces.
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.
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.
After the war, the position of Commander in Chief, United States Fleet was no longer needed.