Lomnovsky graduated from the Tiflis Cadet Corps [ru] for general education.
At the beginning of the Russo - Japanese War, he was appointed Senior Adjutant Office, General Quartermaster in the 1st Manchurian Army.
On March 27, 1906, he took the post of Chief of Staff of the 6th East Siberian Rifle Division.
The First World War began and Lomnovskogo was appointed acting Chief of staff of the 8th Army.
On July 24, together with the 8th Army Corps, the attack administered the Germans a serious defeat, and the following day it continued, but was minimized by A.F.
On 22 July Lomnovsky launched an army offensive that was unsuccessful, the casualties amounted to 6.000-7,000 killed.