circa 1917: Poster showing a boxer dog, wearing an Allied military helmet, looking on as a wounded dachshund dog, wearing a German helmet, stands next to a sign pointing 'To Berlin,' World War I, 1914-1918. (Photo by Hirz/Getty Images)
circa 1917: Poster showing a boxer dog, wearing an Allied military helmet, looking on as a wounded dachshund dog, wearing a German helmet, stands next to a sign pointing 'To Berlin,' World War I, 1914-1918. (Photo by Hirz/Getty Images)