Since the Paleolithic age, weaponry included axes, swords, and knives. Enter the Industrial Revolution and a whole new era of massive destruction. From World War 1, D-Day to September 11, Modern Marvels shows us the stories behind the deadliest weapons to command centrals, Morse code to advanced search and rescue training. With an investigative lens, join History Channel in examining war technologies that have taken and saved countless lives and shaped the course of history. For war DVDs, and tech DVDs, shop all the Modern Marvels.