During and shortly after World War I, Sherman served in European waters as an officer of the gunboat and destroyer. In 1919–21, Sherman was assigned to the battleship and destroyers and, serving as commanding officer of the latter. Following duty as Flag Lieutenant to Commander Control Force, Atlantic Fleet, he received flight training at Naval Air Station Pensacola, Florida. Designated a Naval Aviator in December 1922, Lieutenant Sherman was assigned to Fighter Squadron VF-2B until 1924, when he returned to Pensacola as an instructor. Study at the Naval War College was followed in 1927 by service in the aircraft carriers and. While in the latter ship, he commanded Scouting Squadron VS-2B and was Flag Secretary to Commander Aircraft Squadrons, Battle Fleet. Promoted to the ranks of lieutenant commander in 1930 and commander in 1937, during that decade Sherman served at the Naval Academy, commanded Fighter Squadron VF-1B, had charge of the Aviation Ordnance Section of the Bureau of Ordnance, was Navigator of the aircraft carrier, and had duty on a number of flag staffs. In 1941–42, he served with the Office of the Chief of Naval Operations and was a member of the Permanent Joint Board on Defense, Canada-United States. Commander Sherman worked closely with then US Army Major Albert C. Wedemeyer, author of the "Victory Plan of 1941", "the blueprint... for the mobilization of the United States Army for World War 2". Wedemeyer, while working in the War Plans Department, was commissioned to write the "Victory Plan by General George C. Marshall." In May 1942, after reaching the rank of captain, Sherman took command of the carrier, taking the ship through the first month of the Solomon Islands campaign. After Wasp was sunk by a Japanese submarine on September 15, 1942, Sherman was awarded the Navy Cross for his extraordinary heroism in command of the carrier during the opening days of the South Pacific operations. Sherman then became Chief of Staff to Commander Air Force, Pacific Fleet. In November 1943, Rear Admiral Sherman was assigned as Deputy Chief of Staff to the Pacific Fleet commander, Admiral Chester W. Nimitz. He held that position for the remainder of World War II, playing a critical role in planning the offensives that brought victory in the Pacific, and was present when Japan surrendered on September 2, 1945. Following a short tour as a carrier division commander, in December 1945 Vice Admiral Sherman became Deputy Chief of Naval Operations. 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, and oversaw its responses to the twin challenges of a hot war in Korea and an intensifying cold war elsewhere in the world. On July 22, 1951, while on a military and diplomatic trip to Europe, Admiral Forrest Sherman died in Naples, Italy, following a sudden series of heart attacks. He was buried at Arlington National Cemetery on July 27, 1951.