Преображенский лейб-гвардии полк
On 18 November 1906 he was sent to the Preobrazhensky Regiment, and on 1 November 1907 — for the "military distinctions" he was transferred to the regiment. Since 1907, he has been a lieutenant; since 1911, he has been the captain. He served in the regiment as an assistant to the head of the training team, head of the machine gun team, head of the survey team, commander of the 15th company, and head of the training team.