The article describes the possibilities of using autonomous robotic systems in conducting reconnaissance in military operations. It identifies the advantages, disadvantages and limitations of and to their effective deployment in open terrain and for reconnaissance in built-up areas. The proposed option to address the problem areas is the Modular Robotic Reconnaissance System, which consists of an interconnected and cooperating ground and air part in the form of an Unmanned Ground System and Unmanned Aircraft System. By simultaneously operating on the ground and at different flight altitudes in the air, the system allows commanders to develop a more comprehensive view of the battlefield situation and to explore rugged terrain, including built-up areas. The communication link between all elements of the system, other systems and commanders on the battlefield is designed on the basis of the wave relay MANET radio network. Flexibility of deployment and long-term sustainability in military operations is a key requirement for planning and controlling the operation of robotic systems, for which the Tactical Decision Support System and its mathematical algorithmic models can be used.