Though war dogs served with distinction in World War I, and in countless campaigns and conflicts before that — delivering messages, comforting frontline troops, and biting enemy soldiers on the ass — on March 13, 1942 the U.S. Army began training dogs to serve in the newly created War Dog Program, referred to as the K-9 Corps. The War Dog Program marked the beginning of modern military working dogs as we know them.
Benjamin Franklin nailed it when he said, "Fatigue is the best pillow." True story, Benny. There's nothing like pushing your body so far past exhaustion that you'd willingly, even longingly, take a nap on a concrete slab.