The Dink Network

Yeah, though Ogryns and Kasyrkyn are great, I personally loved HW teams as they don't cap out at 1 unit and give early-midgame guard some needed defensive flexibility. But, mostly, the infantry is there to clog the enemy's guns with their bodies so that the Guard's tanks can just roll over them.

I've not played UA yet (too many other games on my plate), but the videos I've seen make it look pretty cool, though they're still working on balance.