north to Biburg, where he tried to get across the Abens again. At first he was not successful, but Bianchi withdrew to Kirchdorf, allowing the 2nd Bavarian Division to cross to the east bank of the stream. Meanwhile, General of Division Dominique Vandamme's Württemberg contingent (later known as the VIII Corps) replaced Wrede in front of Siegenburg. Vandamme soon realized that crossing at Siegenburg was futile, so he too marched north, crossed the river at Abensberg and moved south to Kirchdorf. Here the Bavarians and Württembergers found Bianchi with his reinforced brigade and a cavalry squadron. Reuss soon arrived with Radetzky's two battalions. Around 2:00 PM a sharp combat took place after which the Austrians retreated to the southeast. According to one account, General of Division Jean Victor Tharreau's cavalry of the II Corps also became involved at Kirchdorf. Pressed by Wrede's 7th Bavarian Infantry Regiment, plus two of Hügel's Württemberg battalions, Radetzky conducted an orderly retreat on the Siegenburg road, covered by the grenzers and Kienmayer's grenadiers under General-Major Konstantin Ghilian Karl d'Aspré. He managed to shepherd the V Armeekorps trains safely through Pfeffenhausen before the Bavarians cut him off. Wrede pursued aggressively and scooped up many prisoners but failed to capture the bridge, which the Austrians burned. Even so, the Bavarians kept up the pressure, crossing the shallow Große Laber at 11:00 PM to attack. Radetzky fell back to a hill called the Hornbach where his rear guard skirmished with the Bavarians into the early morning hours. When Vincent's column neared Rottenburg, he found the road jammed with the III Armeekorps trains. A charge by the Rosenberg Chevauxlegers halted the French cuirassiers long enough for his infantry to gain solid positions on the east side of the Große Laber. Hiller arrived at Rottenburg in the late afternoon and ordered a counterattack at 7:00 PM. Vincent swung his left brigade forward and quickly overran a Bavarian unit, capturing 300 troops. Soon after, the Deutschmeister Infantry Regiment # 4 got into a vicious firefight with Bavarian and French infantry. In the twilight, the Austrians were forced back by superior numbers with 600 casualties, but they had finally stopped their enemies. Regensburg On 20 April, the Austrian II Armeekorps continued attacking Colonel Louis Coutard's 65th Line Infantry Regiment at Regensburg. A French convoy sent to replenish the critically low ammunition supply was ambushed by Austrian cavalry at 8:00 AM. The French