Its not widely known, but unlike any other partizan army, Ukrainian Insurgent Army had in its possession few tanks and even ariplanes. Through my research I came across the following figures; 4 T-34 tanks, 1-T-35 heavy tank and there is at least one mention of a self made armored car (made from a tractor). The Soviet archives also mention that in fighting with UPA they captured two U-2 planes and one german Fizelier Storch. During an attack on a airbase UPA also siezed another german war plane. The plane was taken apart and re-assembled back in the forest. It was painted out with Ukrainian insignia and flown for its first and last mission. After a recon flight it was taken apart again and left due to fuel shortages. For additional recon missions UPA also used gliders.
Here's few photos to share:
Heavy tank "Stefan Bandera" afte being hit. Source: Concord 7012 "Stalin's Heavy Tanks"
German plane used by UPA. Source: Michael Melnyk
Gliders. Source: Kyiv KGB archive photos