Why was it called Operation Barbarossa?

Related questions

1. Why did Germany declare war on Russia?
2. How did Operation Barbarossa fail?
3. How many German soldiers died in Operation Barbarossa?
4. How many German soldiers died in Russian POW camps?
5. How many German soldiers died in Russia?
6. How many Soviets died in Operation Barbarossa?
7. What is the largest invasion in history?
8. What happened to German POWs after Stalingrad?
9. How many German soldiers died in Stalingrad?
10. How many died on the Eastern Front?

Tags

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2. #dissatisfied
3. #named
4. #frederick
5. #roman
6. #december
7. #plans
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9. #century
10. #crusade
11. #hitler
12. #emperor
13. #operation
14. #medieval
15. #these
16. #leader
17. #issued
18. #called
19. #however
20. #which
21. #after
22. #third
23. #empire
24. #directive