Abstract: In the situation of mass casualty incidents in Germany the questions that always remain are what and how much resources are needed to provide the best response. Furthermore, there are many local-specific constraints that exist, such as the density of hospitals nearby, what their surgery capacities are like, the distance between the local rescue bases and the incident scene as well as the level of preparedness of first responders. This paper describes an organisational approach to elaborate the specific tactical strategies that take part in preparedness planning. Furthermore, this paper will give insight and explore a simulation information system to support local medical response managers in elaborating those strategies in an office environment.