‘Technological change’ presents three perspectives on the nature of change in military technology: research and development, dual-use technologies, and military revolutions. World War II ushered in two momentous transformations in the world’s relationship with military technology: the nuclear revolution and modern, institutionalized, routinized research and development. Non-weapons dual-use technologies include fortifications, roads, steam engines, the internal combustion engine, electric and electronic communication, and computers. Weapons dual-use technologies include the Schöningen spear, the bow and arrow, the chariot, nuclear power, explosives, and automatic firearms. Military revolutions have been divided into two arcs of analysis: the role of military revolutions in history and the revolution in military affairs.