At the sound of the first droning of the shells we rush back, in one part of our being, a thousand years. By the animal instinct that is awakened in us we are led and protected. It is not conscious; it is far quicker, much more sure, less fallible, than consciousness. One cannot explain it...It is this other, this second sight in us, that us, without our knowing how. ... We march up, moody or good-tempered soldiers—we reach the zone where the front begins and become on the instant human animals.