This is one of the online portals to the Central Military Archives of the Russian Federation (TsAMO RF). It contains parts of the archive but is has multiple millions of sheets scanned in... so very large. The best advice I can give (as I do not have any information relating to your specified times/region as it fall outside of my area of interest) it to open up the portal, open up a Cyrillic virtual keyboard of choice as the portal does not accept Latin letters, open up a translating app of choice and begin to play around by searching for the information you need. You could perhaps start by researching on
Авиаторы to find out which units you would need to do research on, then in Pamyat-Naroda search those units within your specified time range.
Remember, research takes time and patience.
All the best,
Dan.