@gamerman01 I think you may have misunderstood the question. Germany is doing the combat movement, so Rostov (being controlled by UK) is a hostile territory, and it is a blitzing move.
@simon33 The answer is no. As mechanized infantry can blitz only when they are paired with a tank for their entire movement (see page 29 of the Rulebook), the ones in Ukraine and Bryansk must stop in Rostov and may not continue on to Caucasus.





