World War One

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Across
  1. 3. Failed attack on Turkey in 1915
  2. 5. German gunboat in the Second Moroccan (Agadir) Crisis (7)
  3. 9. Assassin who shot Archduke Franz Ferdinand (7)
  4. 10. The Kaiser on a white horse (7)
  5. 13. British PM at the end of WWI (5,6)
  6. 15. Australian and New Zealand troops (6)
  7. 16. British volunteers (4,10)
  8. 17. Britain, France and Russia together (6,7)
  9. 18. First used by the Germans in 1915 (8,3)
  10. 20. Plan to avoid a war on two fronts (10)
  11. 21. Mutiny of German sailors (4)
  12. 23. First World War battle in 1916 (5)
  13. 24. Only major sea battle of WWI (7)
  14. 25. Troublesome area of Austro-Hungarian Empire (7)
Down
  1. 1. Led to food shortages in Germany (5,8)
  2. 2. Joined the war in 1917 (7)
  3. 4. Passenger Liner sunk in 1915 (9)
  4. 6. Germany, Austria-Hungary and Italy (6,8)
  5. 7. City where Archduke Franz Ferdinand was murdered (8)
  6. 8. Battleship before WWI (11)
  7. 11. Germany's 'world policy' before WWI (11)
  8. 12. Third Battle of Ypres in 1917 (13)
  9. 14. German general (10)
  10. 17. Whale oil rubbed on to prevent this (6,4)
  11. 19. British Army commander in 1916 (4)
  12. 22. Austria-Hungary annexed here in 1908 (6)