Abstract: The object of this research is one of the key personas in history of the Russian Civil War – Matvey Aleksandrovich Sulkevich. The subject of this research is the explication of the beginning of life path of the future prominent General, his career advancement, complicated process of acquiring experience in the military-professional activity within the context of scientific and publishing activity of the scholar. The author examines the biographical details of M. A. Sulkevich, his scientific-military and social work, assessment of the vector of activity of the General, and development of his personal values. Using the source analysis and biographical method, the author qualitatively processes the biographical information from the reference material in the prerevolutionary annual publications, reminiscences of the comrades, as well as the history of Sulkevich’s military service. The scientific novelty consist in the fact the author is first to determine within the extensive biographical material the two discernable vectors in the scientific and publishing activity of M. A. Sulkevich; one of which was related to the military career of the prominent General, future Chief of the Crimean Regional Government. His brilliant education received in the Voronezh Cadet School, Mikhailovsky Military Artillery and General Staff Academy, as well as participation in the Russia-China and Russo-Japanese War and Chinese expedition against the Boxer Rebellion cemented the reputation of M. A. Sulkevich as one of most skilled military experts of the Russian Empire.