Russian-Japanese War 1904–1905 was one of the largest events in world history - the first brutal armed clash between two powers with the participation of massive armies and the use of a variety of land and sea military equipment and weapons. It was, in essence, a harbinger of two world wars of the first half of the 20th century: two countries fought, but the leading Western states - Great Britain, Germany, the USA, France - were interested in the political and economic results of the war. This geopolitical aspect, as well as the identified patterns of influence the new material base of the armed struggle for the development of strategic and operational forms, methods and methods of combat continue to determine the relevance of the historical study of the Russo-Japanese War. Based on historical documents and materials, the authors reveal the reasons for the aggravation of international contradictions in the Far Eastern region at the turn of the 19th and 20th centuries . and their escalation into war. Preparation of the parties for it, battles on the hills of Manchuria, the defense and fall of Port Arthur, battles at sea... The book also convincingly shows the reasons for the defeat of Russia, despite the massive heroism of soldiers, sailors and officers, a comprehensive and in-depth analysis of all aspects of the war - military , political, economic, as well as lessons from military operations on land and at sea, their influence on the development of military science and the material base of armed struggle. The work is illustrated with a large number of little-known documents. A special chapter is dedicated to the 70th anniversary of the end of World War II. It tells about the Far Eastern campaign of the Soviet Armed Forces of 1945, the largest in the history of the war, the successfully carried out Manchurian strategic offensive operation - the triumph of Soviet military art, about the activities of prominent Russian commanders, military leaders, whose names are inscribed in golden letters in the military chronicle of our Fatherland, about the contribution The Soviet Union in the defeat of Japan. It is necessary to express the historical hope that in our relations with our eastern neighbor - Japan - there will be eternal, fair and mutually beneficial peace.