Military Simulation and Training (MS&T) Master Plan of Defense Technology Institution (DTI) was intended to build the next generation training simulators. The systems must be integrated and inter-operated under disparate distributed virtual environments. Dealing with single or multi-architecture for simulation environment, it is essential that the best practice system engineering must be employed. Distributed Simulation Engineering and Execution Process (DSEEP) is a suitable standard for this purpose because it is formulated as a system development life cycle (SDLC) for MS&T. Thus, it is the objective in this paper to investigate how DSEEP can help the developers in building this type of simulators. Command Post Exercise (CPX) requirements are adopted as a problem domain, and the analysis and design of the system will follow DSEEP steps. The work results were analyzed and explained.