1			2									3
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7												8	9
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	11
			12														13		14
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17
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20																	21
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Across 2. left and right wings 4. centurion 7. eagle-bearer 8. archers 11. to make camp (2 words) 15. mess-tents 17. leather tent 18. trumpets 20. highest-ranking centurion of a legion 21. weapons 22. short sword 23. palisade

Down 1. slingers 2. one-tenth of a legion 3. footsoldiers 5. ranks of infantry 6. battle lines 9. triple battle lines (2 words) 10. a military unit of about 5,000 men 11. Gimme Another 12. wings 13. commanding officer of horse soldiers 14. standard 16. light-armed soldiers 19. body armor