Future challenges for the Swedish Armed Forces creates a renewed interest for command and control research. Some examples of research topics are how the technical development affects future command and control capability, design of command posts, development of command and control methods, and the effects of new command and control systems. Investigation of such research topics requires an infrastructure for command and control research. This report describes suggestions for design and maintenance of an infrastructure for command and control research based on identified needs. The needs were identified through interviews with personnel at the Swedish Defence Research Agency and other actors within the Swedish military and civil defence, such as Swedish Armed Forces, Swedish Defence Materiel Administration, Swedish Defence University, and Swedish Civil Contingencies Agency. This report shows that design and maintenance of an infrastructure requires an early consideration of trade-offs between supporting general and specific needs, as well as of necessary security. Supporting general needs for several types of studies makes the infrastructure versatile, while supporting specific needs of a smaller target group makes it possible to adapt the infrastructure to their needs. The trade-off between supporting general and specific needs involves both avoiding the cost of versatility and that the infrastructure may no longer have a purpose when the study is completed. Further, the restrictions that are required for an elevated security level may reduce the infrastructure's versatility and increase the threshold for using the infrastructure. An infrastructure that will be used for different studies also needs flexible facilities, military combat simulators, command and control system, communication system, support for logging and analysis of data, as well as equipment for visualisation of chain of events. Finally, long-term financing and personnel resources are required for maintaining an infrastructure in a sustainable way over time.