Warfare through time

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Across
  1. 2. : 1815 battle that defeated Napoleon
  2. 4. : soldier on horse
  3. 7. : soldier on foot
  4. 9. : long-range weapon that needs arrows
  5. 11. : era characterized by factory production
  6. 13. : battle where Scottish schiltrons were defeated
  7. 14. : defensive digs during World War I
  8. 15. : Medieval and Early Modern dense equilateral formation
  9. 16. : Middle Eastern country invaded in 2003
  10. 17. : English Civil War battle
  11. 19. : upgrade to gun allowing bullet to spin and be quicker
Down
  1. 1. : battle where British cavalry was defeated by Russian cannons.
  2. 3. : hitting the side of an army
  3. 5. : cannon
  4. 6. : the army and air force working together
  5. 8. : atomic
  6. 10. : building where mechanized production happens
  7. 12. : armored car with big gun
  8. 18. : bombing of London