Is the movie Stalingrad based on a true story?

Related questions

1. Why was ww2 the deadliest war in human history?
2. How many warships did the British navy have?
3. Which countries fought in the Battle of the Bulge?
4. Does Tania die in Enemy at the Gates?
5. Who had the most kills in ww2?
6. Why did Germany lose Battle of Stalingrad?
7. Who was the German sniper in Enemy at the Gates?
8. What is Stalingrad Russia now called?
9. How many German POWs died in Allied captivity?
10. How many people died at Stalingrad?

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21. #soviet
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25. #effort