"On War" is a famous military work by the outstanding German strategist Karl von Clausewitz. In this book, the author examines war as a phenomenon and examines the strategy, tactics, and psychological aspects of conflicts. Clausewitz believed that war is the continuation of politics by other means, and military success depends on understanding the interrelationship of political, economic and social factors. The author divides the war into internal and external, considers the concepts of strategy, tactics, blockade, defense and offensive. He emphasizes the importance of a correct understanding of the situation, analysis of enemy actions, planning and management of military operations. "On War" is considered one of the most influential works in the field of military theory and philosophy. This book made a significant contribution to the development of strategic thinking and is still required reading for military strategists, politicians and historians.