Without our aid, the Soviets would have lost the war.
“Winning the Lost War,” by Lawrence Cambria, argues persuasively that the USSR had already pretty well beaten Germany before the US even became involved. Russia nearly lost the whole thing when the Germans were outside of Moscow, but after that, when the Wermacht failed to take Moscow, nothing went well for the Nazis. If Cambria is correct, then the primary result of American involvement was saving Western Europe from the USSR.
Yep. Entire divisions equipped with Ford/Dodge trucks, M2/M3 Lee tanks, M4 Shermans, and British Crocodile, Crusader, and Valentine tanks.