Forum:WAW solo campaign problem

Hi I have found a problem in the solo game on blowtorch and corkscrew. When I get to thebit whereyou take out the 200m guns, I takes out a bunker it says I haven't. In fact once I took out all three bunkers but it didn't say objective complete there ws no way foward (Iwas blocked by a fence) and the marines kept shouting Get to it miller and hurry it up miller. Whats going on??