Related Clues:
- Argonne Forest river
- Oise tributary
- Nieuwpoort river
- Belgian river to the North Sea
- River in W.W. I fighting
- French department in Picardy
- Battle of the ___, 1914
- World War I battle
- River in WWI fighting
- WWI battle setting
- River through Flanders
- River in France and Belgium
- River through France and Belgium
- River of northern France
- River in northern France