This paper treats the topic of Weapon Management Systems and the benefits their automation would have on Innovation and Interoperability in the defence sector. It argues, specifically, that automation provides a way of improving the military landscape in its entirety with a bottom-up approach. Methodically, the research draws from the contemporary relevance of the concepts of Innovation and Interoperability to highlight how digitalising and streamlining military administration can have positive and lasting effects on the defence sector. In that, this paper finds that automation can benefit Innovation by furthering broad sections of the world of defence and the entanglement between these sections. Particularly here, the bottom-up perspective becomes an important aspect of how automation can improve the military land- scape. In the discussion about Interoperability, the bottom-up perspective offers insights into the flaws of current European frameworks in enhancing the military by making it more in- teroperable. The automation of Weapon Management Systems therefore serves as an overview of how seemingly smaller initiatives can positively impact relevant features of current defence needs. This research thus makes a bold attempt in trying to present new ways of implementing important steps in European defence.