" Cuinchy bred rats. They came up from the canal, fed on the plentiful corpses, and multiplied exceedingly. While I stayed here with the Welsh, a new officer joined the company... When he turned in that night, he heard a scuffling, shone his torch on the bed, and found two rats on his blanket tussling for the possession of a severed hand. "

― Robert Graves , Goodbye to All That