The Red Badge of Courage

Amazon writes, "The novel is told through the eyes of Henry Fleming, a young soldier caught up in an unnamed Civil War battle who is motivated not by the unselfish heroism of conventional war stories, but by fear, cowardice, and finally, egotism. However, in his struggle to find reality amid the nightmarish chaos of war, the young soldier also discovers courage, humility, and perhaps, wisdom. Although Crane had never been in battle before writing The Red Badge of Courage, the book was widely praised by experienced soldiers for its uncanny re-creation of the sights, sounds, and sense of actual combat."

"Yet the youth smiled, for he saw that the world was a world for him, though many discovered it to be made of oaths and walking sticks. He had rid himself of the red sickness of battle. The sultry nightmare was in the past. He had been an animal blistered and sweating in the heat and pain of war. He turned now with a lover's thirst to images of tranquil skies, fresh meadows, cool brooks - an existence of soft and eternal peace." (Stephen Crane - 1895)

All in all, I say: READ IT don't see it. Even though Huston (Maltese Flacon) helped write the screenplay.