These maneuvers left the Army of the Rhine and Moselle isolated. When Wurmser sealed off the French bridgehead at Mannheim, the Army of the Rhine and Moselle was trapped on the east bank. The Austrians defeated the left wing of the Army of Rhine and Moselle at the Battle of Mainz and moved down the west bank. In November, Clerfayt defeated Pichegru at Pfeddersheim and successfully wrapped up the siege of Mannheim. In January 1796, Clerfayt concluded an armistice with the French, sending the Army of the Rhine and Moselle back to France, and retaining a large portions of the west bank.