The Second World War created heroes and scoundrels in good measure. Few men shifted from role to role with the insolent ease of Neville Heath. Exchanging one alias for another, he was at various times Lord 'Jimmy' Dudley, Captain Bruce Lockhart, 'The Cambridge Blue', Group-Captain Rupert Brooke, and Lieutenant-Colonel James Rupert Cadogan Armstrong, DFC, AFC. In reality Neville Heath was the product of public school and Borstal, an officer and...