Where did the term Kilroy come from?

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Tags

1. #apart
2. #although
3. #phrase
4. #graffito
5. #often
6. #origin
7. #related
8. #known
9. #combined
10. #image
11. #cartoon
12. #during
13. #predominantly
14. #kilroy
15. #conjunction
16. #military
17. #earlier
18. #unknown
19. #members