| Answer | Crossword Clue |
|---|---|
| BERTHA | Big ... (W.W. I weapon) |
| GAS | W. W. I. weapon |
| MUSTARDGAS | W.W. I weapon |
| BERTHA | Big ... (W.W. I cannon) |
| BERTHAS | Big W. W. I guns |
| BERTHA | Big ... (German W.W. I cannon) |
| BERTHA | Big ... (German gun in W.W. I) |
| MARNE | Scene of two big W.W. I battles |
