Sever should have never even been reinforced and defended, just evacuated right away, when there were still bridges (blow them up behind them). It was a way too risky gambit, they could've been surrounded totally. But they did really well and withdrew across the river.

We both know you have never even heard about this "vital point" (a random industrial town sandwiched between enemy territory and river) before they decided to make a stand there. If you really believed anyone who told it eas any "vital point", you're just stupid. Hey, you are stupid.