| Answer | Crossword Clue |
|---|---|
| YSER | Strategic river of 1914 |
| YSER | Strategic European river of 1914 |
| YSER | Strategic Belgian river of WWI |
| YSER | Strategic WWI river |
| MARNE | Strategic WWI river |
| VARDAR | Strategic river, Yugoslavia. |
| YALU | Strategic Chinese border river |
| MARNE | Strategic WWI French river |
| YALU | Strategic river in Asia. |
| YALU | Strategic Korean-Manchu river. |
| ORNE | Strategic river on D-Day |
| YSER | Strategic W.W. I river |
| RHIN | Strategic river between s. w. Germany and France: Fr. Sp. |
