 The 4 April pause in the 3rd Army advance allowed the other armies under Bradley's command to reach the Leine River, about east of Paderborn.Thus all three armies of the 12th U.S. Army Group were in a fairly even north–south line, enabling them to advance abreast of each other to the Elbe.By 9 April, both the 9th and 1st Armies had seized bridgeheads over the Leine, prompting Bradley to order an unrestricted eastward advance.