Unfortunately, having a unit detached from its HQ imposes serious penalties in the subordinate unit. As far as I know, there is no way to attach a unit to a different HQ than the one it was assigned by the scenario designer (no dynamic order of battle). On the bright side, the size of the maps and the duration of the scenarios does not lend itself too well to assemble a kampfgruppe. Time is so tight in the average scenario!
|For a better view, right click and open this image in a new tab. A new press of press "Alt" and "o" will highlight the entire regiment.|
|For a better view, right click and open this image in a new tab. And so on, a new press of press "Alt" and "o" will highlight the entire division, in this case the SS-Totenkopf Division.|
This hotkey combo is available also in the WWI, and Panzer Campaigns series. I find it very useful to keep track of formations during battle. Remember that HQ units are more than just counters.