World War 1

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Across
  1. 3. Best fighter pilot
  2. 5. Russian communists
  3. 6. Guy who sent telegram to Mexico
  4. 8. Teenager who assassinated Ferdinand
  5. 9. Kind of warfare used during world war one
  6. 10. German undersea boats
Down
  1. 1. Year world war one started
  2. 2. River where two battle took place
  3. 4. France Britain Russia
  4. 7. Strong devotion to ones country