Gas makes the eyes run

"During our last spell in the line we had no less than three bombardments and a gas attack in 24 hours."

"Most of the gas is sent over in shells and a large part of it is what we call 'tear gas'... it makes the eyes run like the juice of an onion..."

"On the morning of the attack on Messines we had to advance through a gas cloud made with gas shells. It was soon after we had passed through it and taken off our respirators [gas masks] that I got wounded."

"We always carry two gas helmets one which is always reliable and ready for use... and the other an emergency one…"