The Ukraine War is not a civil war amongst the Ukrainians but in Putin's mind it is a civil war. Is he Franco or the Communists. Will there be German air support, figuratively that is.
What is happening is there is a burgeoning Lincoln Brigade forming but it is international. Putin's Franco does not have the internal support as Franco had in Spain. There are parallels but that is all.
One must remember that it was the Spanish Civil War that presaged WW II and Hitler. Franco won, Hitler saw his opening and the rest is history. Putin as Franco this time may not be so lucky and the result may push Russia back to before Peter the Great! Peter was a giant, Putin a midget.