Which event began first, the Western Allied invasion of Germany or the Battle of Aachen?
Western Allied invasion of Germany The Western Allied invasion of Germany was coordinated by the Western Allies during the final months of hostilities in the European theatre of World War II. The Allied invasion of Germany started with the Western Allies crossing the Rhine River in March 1945 before fanning out and overrunning all of western Germany from the Baltic in the north to Austria in the south before the Germans surrendered on 8 May 1945. This is known as the "Central Europe Campaign" in United States military histories.
OB West The German Army Command in the West ("Oberbefehlshaber West" (German: initials OB West) was the overall command of the Westheer, the German Armed Forces on the Western Front during World War II. It was directly subordinate to German Armed Forces High Command. The area under the command of the OB West varied as the war progressed. At its farthest extent it reached the French Atlantic coast. By the end of World War II in Europe it was reduced to commanding troops in Bavaria.