The textbook corresponds to the curriculum for training cadets (students) of military training centers at higher educational institutions in the discipline "General tactics". The textbook is based on the requirements of the combat manuals of the Ground Forces and other current guidelines and instructions for the preparation, organization and conduct of modern combined arms combat by units. The experience of military operations in Afghanistan and the Chechen Republic, the principles of organization of units of foreign armies are considered. The issues of preparation, organization and conduct of modern combined arms combat by a soldier, squad, platoon are outlined, the work of the platoon commander, squad for organizing combat, commanding units in battle, the actions of a soldier, squad, platoon in the offensive and defense, on the march, in marching and guard security, reconnaissance. The textbook is intended for cadets (students) of military training centers (military departments) at higher educational institutions studying in the specialties "Automated information processing and control systems" and "Radio engineering".