I can see a lot of old Luftwaffe aircraft being used as well as Soviet, Allied, Romanian, Hungarian, and Italian planes.WI Eastern Europe was a ravaged wasteland after World War 2?
Russia is too exhausted to "give a %$#@!
From Poland to Greece, the region descends into chaotic smuggling routes governed by feuding warlords/narco trafficantes. They move weapons, drugs, silk, slaves, electronics, gold, etc. along traditional Silk Road routes.
.... Oh!
Wait a minute!
That sounds like the former Yugoslavia during the 1990s!
Each warlord assembles a scruffy air force from whatever airplanes he/she can salvage from scrap yards. With Russia not caring and West Allies going home as quickly as they can, what operational arms that remain are sold to warlords by starving soldiers.
In fact, some of my earlier posts, which are about fictional liveries for German aircraft inspired by the Magnificent Kotobuki anime, fits the bill in a way.
And here is a Sky-Pirate livery for a German Bf-109 F-4.