Hybrid conduct, efficiency and rapidity of hostilities depend on many factors, including the ability to constantly receive information from the battlefield, time to make decisions and clear implementation of tasks. This can be achieved by increasing the efficiency of all types of reconnaissance, including chemical. The article substantiates the prospects of using unmanned aerial vehicles to detect chemical contamination during chemical reconnaissance by radiation, chemical and biological reconnaissance units. It is established that the probability of detecting a chemical situation depends on the degree of training, physical endurance, psychological stability and fatigue of reconnaissance patrol personnel, technical characteristics of devices installed on reconnaissance vehicles, speed of reconnaissance vehicle or pedestrian patrol in hard-to-reach places. The capabilities of radiation, chemical and biological reconnaissance units to quickly detect chemical conditions are significantly enhanced by conducting air reconnaissance by unmanned aerial vehicles and equipping ground and air reconnaissance devices with devices that identify both combat poisons and hazardous chemicals. It is shown that the use of UAVs with a set of passive infrared spectrometry and automated real-time data transmission system is currently the best option, as the probability of detecting war poisons (hazardous chemicals) in a given area increases, and time for chemical reconnaissance - decreases, which, accordingly, increases the response time of units to a chemical threat. To install modern chemical reconnaissance equipment, in particular passive Fourier-ICS devices, helicopter-type UAVs must meet the following requirements: length - up to 5 m, weight of useful equipment - up to 50 kg, cruising speed - 150 km / h. In addition, it decreases moral exhaustion and the risk of personnel damage. The probable order of application of unmanned aerial vehicles of helicopter type equipped with modern devices is given.