Glory of Generals 3 Guide Based Off of My Experience (DRAFT)

I love how you pick screenshots which suit you case but doesn't tell the actual story, even joke in hand
For that mission, just for everyone else who doesn't get the joke if you haven't reached it, you could use 3 unranked anything and still win.

But to your point as well, I did all of United Front AND most of the Army Groups (I don't mind those modes actually, I find them semi-fun on occasions) AAAANNNDD still didn't have enough Badges to upgrade all of the Special Forces he listed, thus my comment. @Grigory Kulik , you should really clean up that part, since Badge management is equally important as medal management. I also agree with Stoic mostly that the KV6, Maus, Katyusha and Elefant are the most important Special Forces, then followed by the Panther and then the Infantry so if you are prioritizing, that's the way you should go. 

On a sidenote, I would personally not max the T28 (since as Special Forces go, he is one of the worse ones as you'd always go Katyusha and not ALL missions run 2 heavies) which will save you a total of 500+ badges which you can get nearly 3 infantry maxed but I do understand why he does it. 
I also almost never run 2 Allied Tank Generals unless I don't have a choice. So there is that. I tend to just put Timo on my 2nd Heavy Tank if I have no other alternative options, in respond to your question of "who is better commanding my 2nd heavy tank"