In the photo above, the recruits of the Kolchak army in Siberia, 1919.
A Pilotka Hat in the Russian army was introduced into aviation in 1913. Therefore, it has such a name. Gradually the fashion for this headdress began to spread in the army among officers during the war. The Pilotka have spread, mainly, among the armored vehicles and bicycle units, as well as among the grenadiers (assault units). Wearing these headdresses spread to the soldiers. In 1917, the wearing of Pilotka was officially authorized in the army.