All military aircraft of the resistance air force formed a reconnaissance-bomber unit, called the Combined Squadron.

Other aircraft reported to be in resistance hands were two Klemm Kl 35, some Heinkel He 72 Kadett and two Savoia-Marchetti SM.84 medium bombers, captured during combat.

The Soviets provided help for the uprising on 17 September 1944, when they moved the 1st Czechoslovak Fighter Air Regiment under the command of Captain František Fajtl.

Finally, as the last airfield in insurgent hands, Tri Duby was threatened by artillery fire and the advance of German troops.

Most of the pilots joined the 1st Czechoslovak Combined Air Division, which took part in liberating Poland and Czechoslovakia at the beginning of 1945.