| Answer | Crossword Clue |
|---|---|
| MARNE | River important in WWI |
| YSER | Important river in WWI |
| YSER | French river important in WWI |
| YSER | River in WWI fighting |
| YSER | River in WWI battle history |
| CLYDE | Important river in Scotland. |
| SAAR | Important river basin in Europe. |
| MARNE | River important in World War I |
| MARNE | Important river in World War I |
| ELBE | Important river in W.W. II |
| ODER | Important river in W.W. II |
