At this point, the inherent jealousies and competition between generals came into play. Moreau could have joined up with Jourdan’s army in the north, but did not; he proceeded eastward, pushing Charles into Bavaria. Jourdan also moved eastward, pushing Wartensleben’s autonomous corps into the Ernestine duchies and neither general seemed willing to unite his flank with his compatriot's. There followed a summer of strategic retreats, flanking, and reflanking maneuvers. On either side, the union of two armies—Wartensleben’s with Charles’ or Jourdan’s with Moreau’s—could have crushed the opposition. Wartensleben and Charles united first, and the tide turned against the French. With 25,000 of his best troops, the Archduke crossed to the north bank of the Danube at Regensburg and moved north to join his colleague Wartensleben. The defeat of Jourdan's army at the Amberg, Würzburg and Limburg an der Lahn allowed Charles to move more troops to the south.