John Alfred Terraine, FRHistS (15 January 1921 – 28 December 2003[1]) was an English military historian and TV screenwriter.
Among other series, Terraine was associate producer and chief screenwriter of the 1963–64 BBC-TV documentary The Great War, and co-wrote its sequel The Lost Peace (1965).
In 1964 Terraine edited a collection of diaries written by General James Lochhead Jack during the First World War, which became a best-seller in the United Kingdom.
The Right of the Line: The Royal Air Force in the European War 1939–45 (1985) won the Yorkshire Post Book of the Year award.
One obituarist wrote that for sheer scholarship, the quality and accessibility of his writing and for his debunking of historical myths, Terraine was one of the outstanding military historians of the 20th century.