Here is a new replay after I watch yours, improving my play (really destroying platoon to have acces to call in double Re for 310 MP was something i didn't know), something I do too : I upgrade bolster before call in engis
Still, I find this start up quite interesting :
-IS (starting unit)
-Vickers
-Inf Bolster
-IS
-PLatoon
-Sniper
-6 pdr
-IS
-Cromwell/centaur
-RE.
I realise IS really need the fift man to have the firepower to win basic infantery fights, I get Bolster first to not bleed with reinforcements (really bad designer that you pay 100/25 for a upgrade AND have to réinforce each squad), and replace IS by RE if they die.
Basicly with IS you play like you play USF half a year ago, you loose 1/2 model and you back to prevent you from Bleeding.