From what I have seen, MG34 are risky using against soviet because they usually have alot of different non-fuel options to counter it. USF on the other hand dont have many non-fuel options and the vet0-vet1 pack howie are inferior to soviet vet1 mortars because the howie takes a long time to get vet2 and cant retreat.
Infiltration grenades (only cost 10 munitions for 5 volks grenades) are great and with abit of luck allow volks to win all 1vs1 engagements even against shocks with good grenade micro.
One pro-tip, infiltration grenade cooldown are cancelled once you make a movement with the sqaud. Which mean you should throw 4 grenades with volks (not 5) and then you are ready to throw 4 grenades again and again. Also get a full refund if you dont throw any grenades so can be used to scare units out of cover as well.
Takes abit of practice but very useful if you want to quickly destroy stationary targets with 8-12 grenades

or blobs in narrow places like on a bridge.
Anyone tested if OKW can destroy demo charges with infiltration grenades?