Training unit ability trains only the same nationality units. So Germans can't train Ukrainians or vice versa.
Germans/Austrians have many and can have even more units with training ability. Build them fast and use to upgrade German/Austrain conscripts/reserve infantry corps to regular units. Do it on backyard regions as this only works when units do not move.
Here you can see elite division after some turns of training in Breslau.
Meteoryt-like user. Strikes and disappears.