Let the plans of Nazi Germany's attack on the USSR become known to the Soviet leadership a year before the bloody June 1941. Let the Red Army arm itself with new weapons systems, and the strategy and tactics of defense be revised taking into account clues from the future. Let those military leaders who will not let you down be appointed to key command posts, and the mediocrity is relegated to the second and even the third plan. But will the Soviet Union have enough strength to resist the mighty blow of the "invincible" German army, supported by almost all of Europe?