Alright use common sence here
1) In MP you are in full control of the army you have at your disposal.
Yes, and we have already established how that's a construct of the video game, and in real life these squads would be recieving orders from their superiors, passed down to them by their own superiors, and so on. So any argument about how "you are in full control" only works from a gameplay perspective and has nothing to do with the authenticity or plausibility of what we're talking about.
2) Retreating in MP is regrouping at the frontline HQ. Desertion\Unauthorised retreat would be squads running off-map.
A retreat is a retreat is a retreat. Considering that maps are composed of points of strategic interest like towns or factories, it's not impossible that troops can be assigned it as their post, even if the HQ is somewhere behind them. And no, desertion is leaving your assigned post. And a soldiers post can be a pile of sandbags if that's what their commander wants.
3) When you retreat squads, you give them an order to retreat and regroup...
Yes, and who is "you" exactly? It's funny that you mention that because we've already discussed it like three posts before. That's what they're there for, for reading.
I'm not going to repeat myself because it was long and lengthy but you're welcome to read it in its entirety a half a scrollwheel's length above.
4) In campaing...
Nothing to reapond to here.
We're talking multiplayer not campaign.
In any case what is this stupid aurgument anyway?
Someone mentioned that the Commissar squad could recieve a forward retreat point, and that it made sense because "Order 227 was a thing", and Kasarov took umbrage to that.
I've just been arguing that it's neither a stereotypical depiction of order 227 nor is it somehow completely historically inaccurate.