A bit of alternate history:
In this time-line the Baltic Landwehr defeated Estonian forces at the Battle of Cēsis in June 1919. Allied with the "Special Russian Corps" of General Pavel Bermont-Avalov, they then succeeded in both push the Soviets out of Latvia and invade Estonia.
Concerned about the soviet threat the Allies recognized the United Baltic Duchy to create a buffer state. In 1920 the treaty of Maisons-Laffitte imposed no limits to the Baltic Landwehr concerning its size and the type or quantity of weapons, but all engines, guns, and ammunitions must be provided either by France or England. Local manufacture except for ammunitions was forbidden. This was supposed to insure that the Baltic armed forces could not turn against the allies (and markets for French and British industry…..).
In 1938 the Baltische Fliegertruppen purchased the heinkel he-112 as new main fighter aircraft but due to the treaty condition the aircraft were powered by a British Bristol Mercury XV engine and armed with french Hispano-Suiza HS.404 cannon and MAC 1934 machine guns.
The Baltische Fliegertruppen camouflage scheme was the same used by the "Imperial German Flying Corps" at the end of WWI.
The history (and navy) of the United Baltic Duchy will be developed in an upcoming topic.