The Situation
With Strik's column, after many days behind enemy lines, almost in sight of the safety of Regensburg, the French swooped in and cut the road ahead of them. General Buxhöwden, aware of their plight, agonised over the safety of the city, but concluded that it could be held against stray French probes by a rearguard while he led the bulk of the army out to Strik's rescue. Grand Duke Constantine led the column, clearing the road as far as the town of Abbach of what turned out to be no more than French scouts. Having been swept away the scouts did not, therefore, see that Constantine was followed by a much stronger column led by Buxhöwden himself and von Anrep. Having ensured that the road was free the rescue column counter-marched, on the morning of November 20 heading over the hills back to Regensburg, again with the Guard leading.
Suchet's division, south of Regensburg, had been given an imperial mission - to complete the destruction of Strik's column by cutting it off, along with the Imperial Guard who had come to its rescue, and pinning it against the Danube until the full weight of the French army could be brought to bear to crush it. To that end, his division had cut the riverside road between Regensburg and the isolated Russians on the evening of the 19th, and the following morning were marching south along the road toward Abbach.