\Headquarters Nights\" by Vernon Kellogg 1917, composite of first edition cover, flying goggles, and quote from page 31. During the war Vernon Kellogg was in Brussels as director of Hoover's humanitarian American Commission for Relief in Belgium. He was formerly an entomologist and evolutionary biologist. Kellogg dined with the officers at the German Supreme Command in France and Belgium during the first world war. He was appalled by the German mis-application of Darwinian principles as a justification for waging all-out war. This included use of mustard gas and all available technologies as a \"battle for survival of the fittest\". The quote from page 31 sums this up and reveals that the 'Social Darwinism\" of WWII had a precursor in the WWI. Initially a pacifist Kellogg later campaigned for direct military US intervention in the war to halt the rise of these ideologies."