The land combat simulation environment primarily comprises urban and wilderness settings, where the path planning of military vehicles is mainly constrained and influenced by terrain and road. On the basis of designing and implementing a universal land combat environment service interface, in order to addresses the current scarcity of path planning algorithms in land battlefield environments and their poor real-time performance, an urban road path planning method for military vehicles was implemented based on OSRM(Open Source Routing Machine), and an incremental unit update algorithm for urban road networks was proposed to optimize the OSRM framework and enhance the efficiency of road networks update. Additionally, we implement a wilderness path planning method for military vehicles based on Theta*. Finally, the effectiveness and real-time performance of the proposed path planning methods in battlefield environments maneuvering simulation are validated through the construction of path planning simulation scenarios.