The assualt was finally successful on the tank. I figured out the secret. I only had 66 percent health mind you (that might sound like alot but not really in this situation). I took out some Nazis' from behind with an MP40 and crouch around to different areas. Then, I stopped in front of some barrels and then proned to the panzerfaust, grabbed it , then fell back to my safe position behind a tractor. It took 2 more time of this to successfully destroy the tank. Thankfully, it was the last thing to do in the mission. Contact me if you need help with any game in my collection.