So should Gavrilo Princip be exonerated and Charles Darwin be blamed for WWI? Interesting topic for debate.
I'm not familiar with that name, and don't know a lot about WWI. My understanding, however, from various secondary sources, is that the Germans consciously pursued a policy of brutality early in the war, on the theory that it would make the war shorter. Apparently the military class seized on a superficial Darwinism as at least part of their rationalization of this policy.