What is the theme in War Is Kind by Stephen Crane?

Natural Law is the main theme of this book. In "War is Kind" Crane emphasizes the psychological torment that dying soldiers and their loved ones endure instead of focusing on their heroic or patriotic behavior. He desires to present the world as he sees it rather than the way he wants it to be. Much of Crane's poetry and fiction depict how human beings behave in extreme circumstances, whether that be how the impoverished survive on the streets of New York City, how men in a lifeboat interact when faced with the prospect of drowning, or how soldiers behave while bullets and shrapnel flies around them.