Cross the Four Fronts

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Across
  1. 2. Battle that ruined German hopes for a quick victory on the Western Front
  2. 4. boat A type of submarine whose usage was a reason why the U.S. declared war on Germany
  3. 7. An event in chess also occuring on the Western Front
  4. 8. The strait fought over at the battle of Gallipoli
  5. 12. empire Desirable ally because of its location
  6. 14. First armored version of this machine developed by Britain
  7. 15. Country that joined the Central Powers to defeat an old Balkan rival
Down
  1. 1. Country that created the Schlieffen Plan
  2. 3. Country with the largest amount of men in its military
  3. 5. Site of Russian's disastrous defeat
  4. 6. Neutral country that causes Britain to declare war on Germany
  5. 9. A minority in the Ottoman Empire
  6. 10. Plan thwarted partially by quick Russian military mobilization
  7. 11. gas An uncertain weapon that could backfire due to natural causes such as the wind
  8. 13. The country who was promised land by the Allies through a secret treaty