At first glance, the Saker Scout resembles thousands of other drones that now patrol the skies above Ukraine’s front lines. A black quadcopter, it has a camera enabling a pilot to fly it remotely and deliver a 5kg explosive charge — usually a grenade or an anti-tank warhead. But hidden beneath its carbon-fibre frame is a motherboard no larger than a credit card that may represent the next step in the evolution of war. Its machine learning software can recognise 47 categories of military equipmen...