painting and conversion projects

My present project is painting hundreds of Armies in Plastic figures. Uhlans and cossacks are my present focus. For the cossacks I have a blue coated and a black coated regiment. I am currently converting cosssacks into the 15th Ukrainian hussars, 1914; Their honary chief was Grand Duchess Xenia Alexandrovana, sister of Czar Nicholas 11. The uniform consists oorange tunic and peakless cap with white braid and brick red pants. The cap had a light blue band.I based this on an article in military Modelling, June 1989. I am presently trying to find information on their flag.