Everybody had their role.
The British stood tall when they were “alone”.
The US was able to be the “Arsenal of Democracy”, and ultimately did the majority of the fighting to defeat Imperial Japan, in addition to their role in Europe, including supplying the Allies with their Supreme Commander, a task brilliantly handled by Ike.
And the Russians who defended their Motherland and made the Nazis pay dearly for their mistake.
If my WWII Airborne dad were still alive...he’d answer...
“Suck It, Sergei....”
In fluent English, Russian, Ukrainian, Polish, AND German, just for spite.