Stratogis has worked with a major system integrator to develop a high fidelity end-to-end, RF and network performance model of the DoD Global Information Grid. This model includes force structure, equipment, subnet architecture and traffic data sets for over 50 DoD unit types. In addition, the model supports integrated radio, wireless, satellite and terrestrial network analysis. The model's graphical user interfaces allow any analyst or engineer to rapidly build large operational scenarios consisting of tens of thousands of communication nodes. Our model includes terrain-based RF modeling and and an innovative packet level simulation network modeling that enables accurate, large scale network analysis in a fraction of the time of traditional packet level simulations. Since the tools generate millions of end-to-end performance results in seconds, we have developed smart processing software that rapidly sifts through results; identifies performance shortfalls; isolates their root causes and recommends link and network changes to improve performance. The tool has been used to assess the performance for integrated architectures containing a number of major DoD programs of record. It also has been used to identify gaps in the DoD network architecture and develop solutions to fill those gaps.