 At the same time, General Devers' 6th U.S. Army Group would move south through Bavaria and the Black Forest to Austria and the Alps, ending the threat of any Nazi last-ditch stand there.On 4 April, as it paused to allow the rest of the 12th U.S. Army Group to catch up, the 3rd Army made two notable discoveries.Near the town of Merkers, elements of the 90th Infantry Division found a sealed salt mine containing a large portion of the German national treasure.