The campaign was not entirely bad news for Vienna . At Haslach , Johann von Klenau arranged his 25 @,@ 000 infantry and cavalry in a prime defensive position and , on 11 October , the overly confident General of Division Pierre Dupont de l 'Étang attacked Klenau 's force with fewer than 8 @,@ 000 men . The French lost 1 @,@ 500 men killed and wounded . Aside from taking the Imperial Eagles and guidons of the 15th and 17th Dragoons , Klenau 's force also captured 900 men , 11 guns and 18 ammunition wagons .