| Answer | Crossword Clue |
|---|---|
| YSER | River in WWI battle history |
| MARNE | WWI battle river |
| YPRES | WWI battle site in Belgium |
| ARGONNE | French battle site in WWI |
| ANTIETAM | Bloodiest single-day battle in American history |
| YSER | Important river in WWI |
| YSER | River in WWI fighting |
| MARNE | River important in WWI |
| YSER | French river important in WWI |
