 Once this was done, the 21st Army Group would take Lübeck and Wismar on the Baltic Sea, cutting off the Germans remaining in the Jutland peninsula of Denmark, while the 6th U.S. Army Group and the 3rd Army drove south into Austria.The British Prime Minister and Chiefs of Staff strongly opposed the new plan.Despite the Russian proximity to Berlin, they argued that the city was still a critical political, if not military, objective.