500
Fill in the blank.
During the First World War, Canada fielded a fighting land force of four full divisions, eventually boasting over ______ combatants on the Western Front alone.
**Hint: The answer is in the Knights of the Air Book**
**Double Hint: It may be one of the first sentences in the book.**
During the First World War, Canada fielded a fighting land force of four full divisions, eventually boasting over 600, 000 combatants on the Western Front alone.
Answer is 600,000.