Artificial Intelligence (AI) has emerged as the main engine of growth of the Fourth Industrial Revolution, owing to its naturally cross-cutting, general-purpose nature. From a military perspective, the range of potential applications is at least as vast as the current range of tasks that require human cognition, e.g., analysing and classifying visual data, organising logistics, operating vehicles, or tracking and engaging hostile targets. How can Western nations – by which I mean those nations that are members of either NATO or the European Union (or both) – make the most out of the rise of AI, bearing in mind its potential defence applications?