My Grandfather served in World War II and in his memoir, he wrote about seeing a young American play an immaculate rendition of a piano Sonota. One thing that he stresses in his writing is the waste that Warfare is: pointing out that that Mans ability to play the piano would not matter to the Bullet that would tear his flesh.
Humanity does not exist in total war and genocide and Survival of the Fittest reduces us to the level of a troop of apes clubbing each others brains out. It doesn't matter how humane and civilized the combatants may or may not be off the battlefield.