In the context of offshore landings, which are limited by the dispersed command posts at all levels of the theater, the lack of communication resources, and the unfamiliar geographical setting, an effective way to use intelligent and automated selection of backbone network nodes to rapidly establish a backbone network in the theater is lacking. Taking the U.S. Stryker Brigade Combat Team and the battle command organization as the assumption of the battle force, based on the number of information communication terminals contained in the command posts at each level of the brigade, the sum of the various information communication terminals in the command posts is converted by the sum normalizing method for the weight of the command posts’ C4ISRsystem, the sample points with weight characteristics in the hierarchical clustering data clusters are constructed, and the agglomerative hierarchical clustering of the data clusters is carried out from the two aspects of the weight of the sample points and the solution of the centroid, and the obtained brigade level The aggregation point is used as the pre-selected node of the battlefield backbone network. Finally, combined with the Egli microwave signal transmission loss model and the ant colony algorithm, the battlefield backbone network nodes formed by the preselected nodes are completed and perfected. The feasibility, superiority, and practicality of the model are verified through the comparison of the simulation results. It provides a method to automatically and quickly build a battlefield backbone network by using intelligent and information means, and improves the decision support function of the command information system.