From Prince Igor to Marshal Zhukov. From the A - August operation in the First World War to the Z - Iasi-Chisinau operation in the Great Patriotic War. Before you is a unique encyclopedia, in which for the first time an attempt was made to systematize all the main battles and military operations, where the soldiers of Russia, Russia and the USSR participated. In total, over 700 articles are presented, arranged in alphabetical order. The encyclopedia contains detailed applications and is equipped with maps of the most important battles and operations. The book will be of interest to both a wide range of readers and specialists.