What does D Day stand for in D Day?

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Tags

1. #refer
2. #derived
3. #begins
4. #general
5. #normandy
6. #still
7. #landings
8. #public
9. #anything
10. #stand
11. #means
12. #military
13. #operation
14. #operations
15. #which
16. #allied
17. #generally