Respuesta :
They must allow Hitler to believe he has defeated them, and then attack.
They had to reform the Red Army and the Russian air force.
They used camouflage, surprise and misinformation to keep the German army in the dark about their intentions. The retreated Soviets were ordered by Stalin to leave nothing the Germans could use, this was called a scorched-earth policy.
Answer:
C. they must strengthen the red army's rear troops APEX!!
