 While leading a night-time amphibious attack on an approaching siege army, Bush was presumed killed in the explosion of a powder barge.Bush appears in the novels "Lieutenant Hornblower" (much told from his point of view), "Hornblower and the Hotspur", "Hornblower and the Crisis", "The Happy Return", "A Ship of the Line", "Flying Colours", "The Commodore", and "Lord Hornblower".Bush is portrayed by Robert Beatty in the 1951 adaptation "Captain Horatio Hornblower R.N."