| Answer | Crossword Clue |
|---|---|
| YSER | Belgian river, a W.W. I battle line |
| YPRES | W.W. I Belgian battle locale |
| YPRES | Belgian W.W. I battle site |
| YPRES | Belgian battle site in W.W. I |
| MONS | Belgian city, an early W.W.I battle site |
| ARGONNE | W.W. I battle locale near the Belgian border |
| YSER | Belgian river deliberately flooded during W.W. I |
| MARNE | W. W. I battle river |
| MARNE | W.W. I battle river |
| YSER | W.W. I battle river |
| MARNE | River of W.W. I battle |
