Most of the materials presented in this publication were in “special storage” for a long time, many of which are unknown not only to a wide range of readers, but also to professional historians. V.M. Khrustalev is the author of a number of books and collections of documents on the history of the Romanov dynasty, published in Russia, Germany, Poland, the USA and other countries. In the book of historian-archivist, candidate of historical sciences V.M. Khrustalev tells about little-known front-line episodes from the life of the younger brother of Emperor Nicholas II, Grand Duke Mikhail Alexandrovich, during the First World War, when he commanded the famous “Wild Division” and the 2nd Cavalry Corps on the Southwestern Front.