Knight had a varied career, including service in the Princess Patricia's Canadian Light Infantry during World War I as a signaller, then served as a captain of field artillery in the U.S. Army Reserve until 1926.
He married twice, first on 28 July 1917, to Dorothy Caroline Noyes Hall, with whom he had three daughters and later divorced, and secondly to Jere Brylawski on 2 December 1932.
He also helped co-author the film, Battle of Britain in the "Why We Fight" Series under the direction of Frank Capra.
On the back of The Flying Yorkshireman, this blurb appeared: England's answer to America's James Thurber or Thorne Smith, Knight created the character Sam Small, a villager from Yorkshire whose stock in trade was an endless parade of outrageous tarradiddles and tall tales.
– The New York Times.Source:[6] In 1943, at which time he was a major in the United States Army – Special Services where he wrote two of Frank Capra's Why We Fight series,[7] Knight was killed in a C-54 air crash in Dutch Guiana (now Suriname) in South America.