Battlefront gives us a look inside the design process for their Bridge at Remagen expansion for Flames of War in this article.
From the post:
The US Army is charging for the Rhine, the last physical barrier to the German heartland. Leading the march of the US First Army is Combat Command B of the 9th Armored Division. The Rhine has always been the objective, but no one expects the Germans to leave any of the bridges across the river intact.