Current developments in space-to-space kinetic and non-kinetic weapons are changing the nature of military conduct in outer space. Additionally added flexibility, manoeuvrability and sustainability in space operations is made possible by in-orbit refuelling, servicing, assembly and manufacturing capabilities. When coupled with new technologies like military space vehicles, hunter-killer and nesting doll satellites and converged directed energy weapons, the space domain is realigned with more traditional operational domains of warfare. Although the nature of many military systems are by nature classified, one can infer from the current gamut of Western and adversarial projects already implemented but also in development that an operational paradigm shift is taking place in space. As such, European interoperability has never been so crucial - but similarly so is the ability to militarise space while guided by a stern moral compass, where legal accountability is ambiguous. In this vein, the article contends that space is experiencing an operational paradigm shift. Space is now, for all effects and purposes, a battlefield.