Casualties of that magnitude seen in World War I are totally unacceptable in today's world, yet the same horrible degree of killing was customary and, sadly, predictable during The Great War. Of the 65 million military participants, 10 million would perish in the first major military conflict of 20th century. This is the diary of World War I veteran Private Dewey J. Garton, Battery "F" 61st ARB C.A.C. (Field Artillery).