The infantry went forward behind a creeping barrage, a line of shellfire that walked across no man's land on a fixed schedule, and each man kept pace with it. The margin was a matter of seconds, and an officer held it by the watch on his wrist or the pocket watch in his pocket.

The infantry went forward behind a creeping barrage, a line of shellfire that walked across no man's land on a fixed schedule, and each man kept pace with it. The margin was a matter of seconds, and an officer held it by the watch on his wrist or the pocket watch in his pocket.

The infantry went forward behind a creeping barrage, a line of shellfire that walked across no man's land on a fixed schedule, and each man kept pace with it. The margin was a matter of seconds, and an officer held it by the watch on his wrist or the pocket watch in his pocket.

The infantry went forward behind a creeping barrage, a line of shellfire that walked across no man's land on a fixed schedule, and each man kept pace with it. The margin was a matter of seconds, and an officer held it by the watch on his wrist or the pocket watch in his pocket.

The infantry went forward behind a creeping barrage, a line of shellfire that walked across no man's land on a fixed schedule, and each man kept pace with it. The margin was a matter of seconds, and an officer held it by the watch on his wrist or the pocket watch in his pocket.

The infantry went forward behind a creeping barrage, a line of shellfire that walked across no man's land on a fixed schedule, and each man kept pace with it. The margin was a matter of seconds, and an officer held it by the watch on his wrist or the pocket watch in his pocket.