ww2 puzzle with bad spelling

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Across
  1. 3. against them
  2. 5. will be allies
  3. 7. we made a pact
  4. 10. of the Scheldt
  5. 12. this war was based on him
  6. 14. native Americans are involved with this one
  7. 15. sea
  8. 17. was an opponent and attacked us mostly
  9. 19. russain madman
  10. 20. was a battle
  11. 21. really bad
Down
  1. 1. good poster
  2. 2. bombing
  3. 4. operation
  4. 6. was done a lot
  5. 8. *we all live in a yellow ____*
  6. 9. Russia
  7. 11. faraway land
  8. 13. has a harbor
  9. 16. german leader
  10. 18. big battle 1944