“”There we stood, alone. Did anyone want to give in?
Churchill (the UK) was not alone. Russia was doing the fighting and dying to bring down the Nazis on the Eastern Front. Maybe you didn't learn this in your history classes? Here's a refresher for you:

Up until June 1941, during the days of the “blitz”, Britain was alone. That is what Churchill was recalling, in 1945.
And the proper quibble in this is not about the USSR being involved later, but about the British Commonwealth and Empire (India, Canada, Australia, etc.) and the US, which was being extremely helpful.
I left behind, in the US, nearly all of my library, about 1000 volumes of which were on WW2 alone. I still have some books, among them many of the works of David Glantz.
“Churchill (the UK) was not alone. Russia was doing the fighting and dying to bring down the Nazis on the Eastern Front. Maybe you didn’t learn this in your history classes? Here’s a refresher for you:”
The Battle of Britain occured before the Soviet Union was invaded. Here is part of the speech that should make clear to you what time frame Churchill was talking about:
“After a while we were left all alone against the most tremendous military power that has been seen. We were all alone for a whole year.”
From the fall of France in late June 1940 till the German invasion of the Soviet Union in late June 1941 and America’s entry in the war in December 1941, it was the British Empire and Commonwealth that was fighting Nazi Germany.
Well, for exactly one year Britain DID stand alone. France surrendered on June 22, 1940; and the USSR — which had been an ally of Germany — was invaded a year later, on June 22, 1941.
It was only after Nazi Germany invaded Britain that Russia got involved.
During the Fall and Winter of 1940/41 Stalin sat fat and sassy in the Kremlin while the Luftwaffe pounded London.
Typo. Meant to say ‘’only after Nazi Germany invaded Russia did Russia become an ally’’.