It is amazing what the human frame can stand when necessity demands, and what circumstances one can sleep through. About fifty yards down the slope behind us we looked straight into the muzzles of our guns. That first evening at twilight as we crawled into bed they opened fire. Even if you have stood to the side, or behind, an artillery piece when it is fired you will not have experienced anything like the ear—splitting blast which reaches you directly in front. As I said, we were virtually looking down the muzzles.