1920 Russo-Polish War Project

[Rogerc]

There is a photo of Officers of the 1st Lithuanian - Belorussian Division on the Warsaw 1920 Osprey, they are mainly in Polish uniforms with the small crowned Polish cap.

[Mark Plant]

The 1st Lit-Bel was an entirely Polish unit. That part of the world, like the western Ukraine, had a lot of Poles before Stalin's ethnic cleansing at the end of WWII, and 1920 Poland extended a long way into modern Lithuania and Belarus.

Bulak-Bulakhovich's lot were ethnic Russians. Originally part of the North-Western Army, then with men recruited from those Whites that made it to Poland and from former Red POWs.

[Rogerc]

Right, so possibly in the german uniforms of the North Western Army but more likely in Russian Tsarist uniforms I guess?

[Mark Plant]

It won't be German. Bulak-Bulakhovich dressed in Cossack himself, and almost all his men were Red Army deserters.

His Russian-ness was a big deal, so that seems most likely.

Since all the German uniforms would go to Poznanian units, French uniforms to the ex-Blue armies, and new Polish ones to the likes of the Legions, I would guess that left them only Russian (or possibly English, if they shipped any to Poland).

[cuprum]

The Lithuanian-Belarusian division consisted of residents of territories that once belonged to the Principality of Lithuania. There were not only Poles here, but also Belarusians of the Catholic religion. There were practically no Lithuanians in this division, since Lithuania created its own state - the Republic of Lithuania.
The division was created from soldiers of the Polish army and with a specific political goal - the annexation of territories claimed by three countries: Poland, Lithuania and Russia. A sort of “proxy army” of Poland, which was used to capture Vilna from the Republic of Lithuania.
The division was equipped in the usual Polish uniform mod. 1917 and did not have any special insignia.
By the way, the Poles and Lithuanians fought among themselves for the disputed territories; Soviet Russia actually acted as an ally of the Republic of Lithuania and transferred Vilna to Lithuania, which the Poles had previously taken from the Lithuanians.

The army of the Belarusian Republic itself is a “paper” formation that has no real military force. There is no point in reproducing it on a gaming table.

Bulak-Balakhovich's army wore Russian uniforms (in the cavalry - Cossack ones), later (by 1920) they began to use Polish and American uniforms. They often began to wear a garrison cap with a characteristic trim. The insignia on the headdress is a crossed skull and bones. A white cross was often worn on the left sleeve.

[Mark Plant]

A little bit unfair Cuprum, because the Polish state didn't form the Lit-Bel Division in order to do something that was three year's into the future. The three first regiments and the cavalry were self-defense organisations in the Lithuania-Belorussia area, formed very early. The fourth regiment was added later when the division formed, but was men fleeing the same area.

It was added to the Polish army as its 19th Infantry Division. Some of the unit were not entirely happy with that, because they felt their aims to have Poland extend a long way east were being lost. 

Then Pilsudski reverted it back to being the "1st Lit-Bel Division" because he wanted, as you say, a proxy unit to do his dirty work with regards to Vilnius (https://en.wikipedia.org/wiki/%C5%BBeligowski's_Mutiny).