What branch of the service that has the world's largest aircraft carrier fleet did William D. Halyburton Jr receive the Medal of Honor from?
United States Navy
Title: Escort carrier
Passage: The escort carrier or escort aircraft carrier (hull classification symbol CVE), also called a "jeep carrier" or "baby flattop" in the United States Navy (USN) or "Woolworth Carrier" by the Royal Navy, was a small and slow type of aircraft carrier used by the Royal Navy, the Imperial Japanese Navy and Imperial Japanese Army Air Force, and the United States Navy in World War II.  They were typically half the length and a third the displacement of larger fleet carriers.  While they were slower, carried fewer planes and were less well armed and armored, escort carriers were cheaper and could be built quickly, which was their principal advantage.  Escort carriers could be completed in greater numbers as a stop-gap when fleet carriers were scarce.  However, the lack of protection made escort carriers particularly vulnerable and several were sunk with great loss of life.  The light carrier (hull classification symbol CVL) was a similar concept to escort carriers in most respects, but were capable of higher speeds to allow operation alongside fleet carriers.
Title: William D. Halyburton Jr.
Passage: William David Halyburton Jr. (October 2, 1924 – May 10, 1945) was a United States Navy hospital corpsman who was killed in action during World War II while assigned to a Marine Corps rifle company.  He was posthumously awarded the nation's highest military decoration for valor, the Medal of Honor, for heroic actions "above and beyond the call of duty" on May 10, 1945, during the Battle of Okinawa.
Title: United States Navy
Passage: The United States Navy (USN) is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States.  The U.S. Navy is the largest, most capable navy in the world, with the highest combined battle fleet tonnage.  The U.S. Navy has the world's largest aircraft carrier fleet, with eleven in service, one in the reserve fleet, and two new carriers under construction.  The service has 322,421 personnel on active duty and 107,577 in the Navy Reserve.  It has 276 deployable combat vessels and more than 3,700 operational aircraft as of 2017 .
United States Navy William D. Halyburton Jr.