The Douglas A-1 Skyraider, a single-seat attack bomber was operated by eight countries outside of the main user - the United States.
Svensk Flygtjänst AB operated 14 ex-Royal Navy Fleet Air Arm Skyraiders, modified for use as target tugs for the Swedish Air Force.[1]
The Royal Navy received 50 AD-4Ws [1] which were given the designation Skyraider AEW.1 These were used from 1951 until 1962.
Vietnam operated some captured South Vietnamese aircraft.