Western powers have created a wide range of military networks whose operating modes remain largely unknown to us. While the subfield of International Relations debates the ability of networks to generate convergence, this article addresses this debate with a longitudinal study of one such military network: the Multinational Interoperability Council (MIC). Our analysis reveals that, despite limited resources and influence, members of the MIC produce an identity, norms and capabilities for collective action that are specific to the network. They are able to mobilise them strategically in order to produce soft convergence in the area of military coalition building.