Canada

To extend to this, the rest of the British Empire at the time did massive contributions. The Aussies did real work during the Africa Campaign, even holding a town that single-handedly crippled the Afrika Corps's advance towards Egypt (also Egyptions doing some great work supporting Commonwealth troops as they prepared for the counterattack), countless Indian sacrifices all over the place despite Churchill causing more Indian deaths than the Germans at the same time, New Zealand giving a good show despite basically not having an economy or a population at the time. Frankly, you can point at almost any part of the commonwealth, and they all punched way above their weights for this war, and that doesn't even start talking about the British homefront.

And outside of the colonies, Poland really carried hard on several ways, from volunteers flying during the Battle for Britain, to a single small destroyer soloing the Bismark for an entire hour screaming at the battleship dozens times larger than it (the full story of the Piorun is insane).

Either way, tons of recognition is deserved all around, not just pointing at the UK, Russia, and the US.