The Soldier Tactical Mission System (STMS) requires power to operate - power that must be carried out by the soldier. As the system becomes more advanced the power usage of each component is diminished, while the power carrying capacity, in terms of duration, improves. The improvement is incremental; yet the goal of power management for this system is to significantly increase the length of time a single source can supply the system with power without resupply. In order to develop a power management architecture for the system it is necessary to ascertain what components, under specified conditions, provides the most utility to the soldier. After this is done, tradeoffs can be made and, under conditions of restricted power supply, decisions can be made to turn off components that are less beneficial. Determining the utility of those components is the focus of this report. We examine STMS with the use of complexity theory and combat simulations based upon Agent Based Models, developing a conceptual framework with to analyze the components. Further work needs to be done to analyze the system in various scenarios, specified in the Operational Requirements Document, to obtain the utilities described above.