Although the Russian Imperial Army Air Service consisted of no more than four BAGs (Boevaya Aviatsionniy Gruppa - battle aviation groups), each controlling three or four smaller AOIs (Aviatsionniy Otryad Istrebitelei - fighter aviation detachments)...




![Вiйськова дiяльнiсть ОУН (б) у 1940-1942 роках [Военная деятельность ОУН (б) в 1940-1942 годах]](https://www.rulit.me/data/programs/images/vijskova-diyalnist-oun-b-u-1940-1942-rokah-voennaya-deyateln_559328.jpg)



