From March 8 to November 14, 1918, he held the position of Chief of Staff of the Russian troops guarding the right-of-way of the Chinese Eastern Railway.
In this position, at the beginning of summer 1918, Khreschatytsky began forming the Ukrainian army of the Green Ukraine (Zeleny Klyn).
From November 1918 until August 1919 Khreschatytsky served Kolchak's army, participating in fighting against Soviet Russia and rising to the rank of lieutenant-general.
By autumn 1919 he had become inspector of the Far-Eastern formations of strategic reserve and general on the special commissions at[clarification needed] commander by the troops of the Priamur's territorial department.
From June 26, 1920, there was a manager by the department of foreign affairs of the Zabaykal's government of Semyonov and he negotiated with the Japanese about a joint fight against Red Army.