World War 1 Trenches Were A Labyrinth of Rats, Disease, Decaying Flesh, and the Omnipresent Threat of Death

“Rats came up from the canal, fed on the plentiful corpses, and multiplied exceedingly. A new officer joined the company and...when he turned in that night he heard a scuffling, shone his torch on the bed, and found two rats on his blanket tussling...