Good point
I am remiss in providing the reasons why I did what I did.
In the Black Sea zone several turns back a sizable enemy force was surrounded and captured
In the ensuing turns the exploitation far exceeded the supply line
Units were low on supply and high fatigue, and I have been nursing poor trucks
I held them at rest near their intended crossing at the Prut just north of the city grouping
The enemy rightly strengthened this sector to the point when this turn there was enough supply to attack it was problematic. I estimated that I would only get two or so hexes.
Because I didn't expect a huge success on the north side of the Danube, I sought other places to attack.
The south side of the Danube was far weaker held and in range. I opted for that attack.
Ironically I got the exact penetration that I estimated I would on the other side, and now I am the worse for wear because of it. This only would have looked brilliant if I had broken the thin blue line, which I didn't.
ORIGINAL: M60A3TTS
Stripping away the units and looking at the terrain, it's hard to understand what the purpose of attacking here is, especially with a bunch of tank corps.
You have the Danube with multiple channels, with all these swamp and rough hexes. Unless it was largely devoid of units, that is an area which can easily be left alone.