In ch. 12, describe the retreating army.

At times the armies don't even seem human. They seem like a raging machine charging and retreating. Check out this quote from C.12,

"He turned and watched the mass of guns, men, and horses sweeping in a wide curve toward a gap in a fence. The officer was making excited motions with a gauntleted hand. The guns followed the teams with an air of unwillingness, of being dragged by the heels...As the youth left the scene behind him, he heard the guns suddenly roar out. He imagined them shaking in black rage. They belched and howled like brass devils guarding a gate. The soft air was filled with the tremendous remonstrance. With it came the shattering peal of opposing infantry. Turning to look behind him, he could see sheets of orange light illumine the shadowy distance. There were subtle and sudden lightnings in the far air. At times he thought he could see heaving masses of men."

Also Paul notices the mass confusion, "The fight was lost. The dragons were coming with invincible strides. The army, helpless in the matted thickets and blinded by the overhanging night, was going to be swallowed. War, the red animal, war, the blood-swollen god, would have bloated fill." Men ran here and there muttering incoherent questions trying to get to some type of safe harbour,

"presently, men were running hither and thither in all ways. The artillery booming, forward, rearward, and on the flanks made jumble of ideas of direction. Landmarks had vanished into the gathered gloom. The youth began to imagine that he had got into the center of the tremendous quarrel, and he could perceive no way out of it. From the mouths of the fleeing men came a thousand wild questions, but no one made answers."