RE: Question for panzer campaign stalingrad
Sharky, a little tongue in cheek humor on my part, for my rank. I am not French, but learned a bit in school 45 years ago and then spent a few years hanging out at Campaigns-France, even played in a team game or two with the group. But my French is pretty weak, in particular spoken - I always said - je parle francais avec un accent terrible.
Destroying an HQ impacts just the HQ on its return, where it will be disrupted. Subordinate units are okay, from that perspective, outside of the impacts on their checks requiring the HQ.
To isolate multiple units, you have a have a chain of your units/zocs (most but not all units of zocs) free of enemy units, unbridged/ferried river hexes or map edges, around the group. In one Kharkov '42 campaign, it took a couple of tries to close the final gaps but I isolated probably one third of the Soviet forces in a giant pocket.