Ilyashevich Evgeny Valerianovich was born on October 2, 1864. He was educated in the Alexander Cadet Corps. Entered service on 08/31/1882. Graduated from the Mikhailovsky Artillery School in 1885. Released in the 7th Horse Artillery battery. Second lieutenant on 08/07/1885. Later transferred to Guard horse artillery brigade with the same rank and seniority. Lieutenant on 08/07/1889). Graduated from the Nikolaev Academy in 1893 (geodetic department, 1st category). Headquarters Captain Guards (05/20/1893 for excellent achievements in the science). Transferred to Gen. headquarters with the renaming to Captains with the appointment to be among the officers of the corps of military topographers and the producer of work on the triangulation of the western border space (03/22/1895-03/26/1899). Lieutenant Colonel on 04/05/1898 for distinction. Astronomical work in European Russia (03/26/1899-04/21/1901). Astronomical work in military topographic department of the Amur military district (04/21/1901-01/29/1903). Participant of the China campaign in 1900-01. Colonel on 04/14/1902 for distinction). Chief of Staff of the 14th Cavalry divisions (28.09.1904-07.12.1910). Commander of the 5th Dragoon Kargopol regiment (07.12.1910-21.01.1915). Major General on 04/14/1913 for distinction. Since 01/21/1915 district duty general of the headquarters of the Irkutsk Military District.