This article analyzes how contemporary military training and exercises shape and reify specific modalities of war. Historically, military training has shifted from being individual- and experience-oriented, towards becoming modelled into exercise environments and practices. Drawing on semi-structured interviews with military officers, exercise controllers, and war-game designers, the article distinguishes between tactical training, characterized by military functions embodied through weapon platforms in a demarcated battlespace, and operational training, characterized by administrative and organizational processes embodied through self-referential staff routines. As military exercises integrate the tactical and operational dimensions into a model for warfare, they serve as blueprints for today’s battles at the same time as they perpetuate a martial viewpoint of the world. As a result, preparations for potential future conflicts constitute a fertile ground for apprehending the becoming of war.