Militärakademie für Ingenieure der Luftstreitkräfte „Prof. N. J. Schukowski“
Mavrikiy Slepnyov graduated from the Warrant Officers' School (1915), Gatchina Flying School (1917), First Higher School of Military Pilots (1923), and Zhukovsky Air Force Engineering Academy (1936). Slepnyov took part in the First World War as a staff captain. He then participated in the Russian Civil War as a military engineer for the 25th Chapayev Rifle Division. In 1925, Mavrikiy Slepnyov became a pilot of the Civil Air Fleet and took part in the exploration of the airways of Central Asia, Russian Far East, and the Arctic.