In 1940, after Dunkirk and the Battle of Britain, it could be seen that immediate and ignominious defeat by Nazi Germany had been averted. But victory seemed improbable. Relations with those whom Churchill had to work with against the Nazi threat were far from easy.

He had to battle with his generals, Tory backbenchers and the War Cabinet, de Gaulle and the Free French, and - above all - the Americans.

Walter Reid, bestselling author of Douglas Haig, Architect of Victory, reveals how much time and energy Churchill devoted to fighting the war that was excluded from the official accounts: the war with his allies.

'Recommended to all students of the high strategy of the Second World War without reservation' - The British Army Review