[snipes]

Ok, I remember this part quite well.

First, holster (sp?) your weapon (Q)

As the captain begins to throw the smoke grenade, run ahead of him up the small hill and take cover in the nearest crater. This should provide fairly good cover from the artillary. Then, do some crater hopping from crater to crater. Like said before, you will lose health on this part.

After you finish hopping a few craters, you should notice up ahead in the middle a tank (There's one to the right as well, don't bother with that one though, one of your allies take care of it I believe). Rip out your bazooka/panzerschreck and pop up, aim for the turret and shoot. It will probably take a couple of hits (2 at the most I think) before it explodes.

After that, peer out of your crater and shoot any enemies in sight, so they won't harass you later. Run forward until you walk past the boundaries of the first building. The artillary won't hit you any more, so just continue forward, firing as you go if you need to, until you get your next objective.

Good luck, and be sure to quicksave a lot.