Military cybernetics is a science concerned with the organization and management of military, special, and border guard systems, providing quantitative decision support for commanders (leaders) and headquarters (command and control bodies). This paper considers the composition and structure of military cybernetics. The laws and principles of military science are briefly reviewed and systematized to formulate the general laws of military cybernetics. These include the following: 1) the law of dependence of the goals and results of armed struggle on the policy and capabilities of the state (economics, science, and technology); 2) the law of uncertainty (a true uncertainty arising during tactical-level combat operations and special actions, and a measurable uncertainty arising at the operational and strategic levels); 3) the law of adaptive combat systems (the emergence of new weapon systems leads to changes in organizational structures, tactics, and the development of adequate counteracting means, in terms of performance and cost characteristics). Promising areas of further research include expanding the scope of the laws of military cybernetics and their use in modeling armed struggle and combined arms operations.