I may be missing something, but the only aircraft that has "Nationalist" markings is the Hawk 81. There were quite a few other aircraft, like the I-16, I-153, DB-3, Hawk 75, TB-3, among others, that were used by them. There doesn't seem to be any option to "mark" these planes as such. If there is a way to do this, please let this "slow learner" know.
All I need are some KI-27's and some Claud's.........but you can't have everything.