June 1940: As Britain's soldiers limped home from Dunkirk, a maverick Army officer was already devising a bold plan to hit back at the enemy. His idea was to revolutionise military thinking and change the face of warfare for ever. Relying as much on stealth and guile as on courage and stamina, the Commandos brought to the battlefield the skills of the guerrilla. Trained by an unconventional band of experts, and led by a big-game hunter, a film star,...