Warfare will be transformed by swarms of small, cheap drones which act together as a single unit, enabled by the same technologies that gave us smartphones.

These drones will be too numerous to be stopped by existing weapons. Welcome to the world of Swarm Troopers.

David Hamblin's 358 page book Swarm Troopers: How Small Drones Will Conquer the World |$5.99 at Amazon| forecasts drone technology evolving to swarms: from precision guidance and flying snipers to new warhead technology that slices through steel and disintegrates concrete, how small drones are becoming the ultimate smart weapon.

An associated video shows a team at the Naval Postgraduate School in Monterey, California with a single pilot launching and controlling a record breaking 50 drones in a swarm.