 During the same time Hrekov was appointed the chief of the Kiev Military District and was partially involved in the formation of the Sich Riflemen Halych-Bukovyna Kurin (Battalion) led by Yevhen Konovalets.The unit became the main supporter of the Central Rada and Mykhailo Hrushevsky.After the fall of Kiev early in 1918 Hrekov retired from the Ukrainian People's Army.