 Initially, the opposition in the 6th U.S. Army Group's sector was stiffer than that facing the 12th U.S. Army Group.The German forces there were simply in less disarray than those to the north.Nevertheless, the 7th Army broke out of its Rhine bridgehead, just south of Frankfurt, on 28 March, employing elements of three corps—the XV Corps to the north, the XXI Corps in the center, and the VI Corps to the south.