Oranges In No Mans Land

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Across
  1. 3. incoming mortar
  2. 4. really old ruin
  3. 10. used for weapons
  4. 11. left alone
  5. 12. from abroad
Down
  1. 1. pass through to proceed
  2. 2. this wire fights back
  3. 5. an army but not
  4. 6. only females allowed
  5. 7. opposite of friendly
  6. 8. you should'nt be living here
  7. 9. fighting at home