2 February 1943
Russia defeated the German Army at the Battle of Stalingrad (February 2, 1943) .
the battle of Stalingrad took place in Stalingrad, Russia
1942
Russia and Germany fought in the battle of Stalingrad. Russia owned Stalingrad, and then lost a lot of lives holding on to it, but lost the battle. Russia won in the long run because Germany lost a lot of soldiers and his supplies were drained after the battel.
Germany did. They invaded Russia and reach the river Volga and entered into Stalingrad.
Because they were places where Germany's armies in North Africa and Russia respectively suffered their first major defeat.
Russia's army would prepare to defeat Germany
While there might have been support coming to Russia at the time of the battle of Stalingrad, the battle was fought entirely by Soviet Russia and Nazi Germany, in short, no.
Well they made an agreement with Germany when Germany invaded Poland. The agreement was Russia does not attack Germany and Germany gives a part of Poland to Russia. Then in 1941 Germany invaded Russia after the surrender of France. Russia was about to lose Moscow(capitol city), Stalingrad(major industrial city), and Leningrad(only port left in the Baltic Sea). But each was a German Major defeat especially at Stalingrad where the entire 6th German Army was surrounded and destroyed. After that the Russians just stepped over the Germans one city after another when finally Berlin was invaded by the Russians and taken.
Stalingrad
Germany had been winning in Russia, but that battle was literally hand to hand for every square inch that the Russians fought for. The entire population took part in defeating the Germans and it was a turning point for the Russians. Even today when you visit Russia they point out to you sites where they fought the Germans.
After the fight of the brave soldiers of Russia, thanks to the Nature, cold help us to win the invaders.