E. P. S. Allen, The 116th Battalion in France
“ Suddenly the bells in the German trenches, not a hundred yards from the right flank, began to ring; gas fumes were rapidly making their way over our positions. It was difficult to tell whether the gas was merely lachrymatory or poisonous, and at the first indication every officer and man had slipped on his gas helmet.It is hard enough to find your way about in the dark under ordinary conditions, but with a gas helmet on it is absolutely impossible, and in less time than it takes to tell, the greatest confusion arose, and the success of the whole operation hung in the balance. ”
