Across
- 1. Large country with a large population of soldiers.
- 4. Highly effective underwater vessel.
- 6. ________ tactics that involves a group of submarines to hunt together.
Down
- 2. Country that Austria-Hungary declared war on.
- 3. Battle of _____ that took place in 1914.
- 4. A country whose capital was overtaken by Germany
- 5. Title held by the deceased Franz Ferdinand.