Thunder Bolt
Silly old bat
All of this is absolutely correct. Between the wars he was a political disaster, he completely misjudged the people in 1945 and then returned as PM for all the wrong reasons in 1951.
That said, when it mattered, when we needed someone with his resolve, charisma and energy, he delivered - and delivered big. He was an excellent First Lord of the Admiralty in WW1 (such that when he was brought back into the War Cabinet under Chamberlain, the Navy semaphored "Winston is Back!"
The fact that when they came together in a wartime coalition government, Atlee and Labour insisted on serving under Churchill (and not Chamberlain) probably tells you all you need to know.
He wasn't just a great war leader, he was the great war leader. In my view, we would have been toast without him.
Although Gallipoli was a complete disaster.