Politics, economics, ideology, culture, strategy, tactics, and philosophy have all shaped war, but none of these factors has driven the evolution of warfare as much as technology. Expanding on this compelling thesis, this Very Short Introduction traces the co-evolution of technology and war from the Stone Age to the age of cyberwar and nanotechnology. There have been few things in history so closely allied and dependent on each other as war and technology. Though this may seem obvious in an age of nuclear capability and smart bombs, Alex Roland's fascinating book demonstrates that this was always so.