Katyushas and superior T 34s which the Soviets has around 10000...

Katyushas and superior T 34s which the Soviets has around 10000 comparing to Germany having 3500 in June 41. The Germans wanted desperately to lay their hands on the Kayushas, but any damaged one would be blown up.

No country in the world would have been able to sustain the largest invasion in the history of the world and recover to completely destroys the German dream of ruling the world. The USA assisted any country actively fighting Nazis, so the Soviet Union was not an exception. They received the most aid, because they fought almost entire German Defense Force .