The book "Tactical application of military radiotelegraph" is a valuable source of information on communication in the Workers' and Peasants' Red Army (RKKA). The publication discusses in detail: Principles of military radiotelegraph operation in tactical operations Methods of radio communication in combat conditions Experience and recommendations on the use of radiotelegraph in real combat operations Technical characteristics and arrangement of radio stations of that period This is a rare and significant publication, interesting not only to collectors, but also to historians, military specialists, radio amateurs and researchers of military equipment. Rare - the 1925 edition is practically not found on sale Historical value - detailed data on the tactical use of radio communications at the beginning of the XX century Original artifact of the era - the book was released during the formation of the Soviet military doctrine A great gift for collectors and lovers of military history There are stamps of libraries