The design of future military C2-systems is increasingly influenced by emerging technologies such as AI and autonomous platforms. These systems must operate across domains, evolve rapidly, and remain coherent with operational doctrine and organizational processes. To manage this, architecture frameworks like the NATO Architecture Framework (NAF) are widely used. NAF supports modeling coherence and ensures traceability from capability needs to system implementations. However, it lacks methodological guidance. To address this gap, we introduce an extension to NAF, building on the principles of Situational Method Engineering (SME). Our proposal includes reusable method components. Specifically, it includes a MAP-based Navigation Guidance that structures design intentions and strategies in alignment with stakeholder needs, and two method chunks, supporting core design activities. One method chunk supports designers to assess the relevance of integrating emerging technologies into existing C2- systems. The other method chunk enables exploration of how new technologies perform across operationally relevant and underspecified scenarios. Both chunks are grounded in previously validated stakeholder goals and detailed design requirements, ensuring alignment with military capability needs. Our approach complements NAF by providing methodological guidance for navigating integration decisions. This initial proposal shows how method chunks can enhance design adaptability and address socio-technical concerns such as stakeholder alignment and doctrinal coherence. While only two method chunks have been constructed

so far, the results demonstrate the potential of a modular, goal-aligned method repository to guide C2-system development. In future research, we focus on expanding the method component repository and evaluating the framework in a real-world setting.