Simulation and visualization of the modern battlefield is becoming more difficult, due to the increasing sophistication of modern weapons systems, the diverse nature of future conflicts (e.g. low-intensity, humanitarian support, etc.). This diversity and the increasing complexity of modern weapons systems indicates a need for advanced simulation capabilities. To be effective training and planning devices, future military simulation systems will have to provide high-fidelity views of real and simulated battle spaces, including environmental and man-made effects. Current simulation systems lack the performance required for high-fidelity simulations. This is due to limitations in modeling and graphics software, pipelined graphics systems, I/O technology and user interface restrictions. The specific area addressed in this proposal is development of high-performance graphics software and associated tools for parallel platforms. In this project Onyx Sciences Corporation proposes to develop a parallel graphics toolkit to support development of visual simulation applications for the US Army. The proposed Scalable Visual Simulation Toolkit (SVST), to be delivered to the Army Customer, consists of two main sections (1) a software toolkit to support visual application development, and (2) a high performance graphics library for realtime rendering. The proposed system will utilize state-of-the-art commercial technologies and standards to provide enhanced, high-fidelity graphics capabilities for a variety of visual simulation applications.