A box-office flop, grossing about $7 million against an estimated $40 million budget. Producer Lew Grade later remarked "it would have been cheaper to lower the Atlantic".
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Colleano tragically died in 1958 at the age of 34, when he crashed his sports car (a Jaguar XK140) in Birkenhead shortly after leaving the Queensway Tunnel.
Wikipedia - "Former participants of the battle served as technical advisers including Douglas Bader, James Lacey, Robert Stanford Tuck and Adolf Galland."
