As artificial intelligence moves from research labs into surveillance systems, targeting tools, and military decision-making, the question of what technology can do becomes inseparable from the harder question of what it should do. The history behind Breaking the Code offers a useful point of entry. Just as the First World War reshaped warfare on an industrial scale, the Second World War introduced new systems of secrecy, communication, and computation that transformed the battlefield again. Alan Turing’s work emerged from that shift. What can that history teach us now, as another technological threshold comes into view? When speed, secrecy, and strategic advantage drive development, what limits are actually possible, and what risks emerge when human judgment moves further from the center of military action?