During July and August, Austria sent a fresh army into Italy under Dagobert Wurmser. Wurmser attacked toward Mantua along the east side of Lake Garda, sending Peter Quasdanovich down the west side in an effort to envelop Bonaparte. Bonaparte exploited the Austrian mistake of dividing their forces to defeat them in detail, but in so doing, he abandoned the siege of Mantua, which held out for another six months. A week of hard-fought actions that began on 29 July and ended on 4 August resulted in the retreat of Quasdanovich's badly mauled force.