How important was Churchill's role in the war

How important was Churchill's role in the war?

Churchill was very doubtful over whether the invasion of Northern France (D-day) would succeed

Churchill's role declined thoughout the war. The peak of his power was between July 1940 and June 1941, including the Atlanta Conference were there was as close to full equity between the USA and Britain as there would ever be. By 1942 Churchill's role was declining and by 1944 Britain was being dominated by the larger, richer and more powerful USA. It had lost one of it's key characteristics, it's freedom of action. 

In a bid to reclaim some of it's power, the imaginative suggestion was the 1944 'Operation Market Garden' was initiated by Montgomery. It was an unmitigated disaster. Mostly due to the poor planning and the unexpected presence of a German…