Sherman's next assignment, beginning in January 1948, was to command the navy's operating forces in the Mediterranean Sea. He was recalled to Washington, D.C., at the end of October 1949 to become Chief of Naval Operations, with the rank of admiral. During the next sixteen months, he helped the navy recover from a period of intense political controversy (as in the so-called "Revolt of the Admirals"), and oversaw its responses to the twin challenges of a hot war in Korea and an intensifying cold war elsewhere in the world.