Battle in Zerbst Operational
French perspective
After the Prussian hasty withdrawal from Magdeburg, Napoleon noticed that Hohlenhoe withdrew on the east side of the Danube River, which was very close to the French position on the west side of the river.
Napoleon decided not to follow up into Magdeburg and observed the Prussian retreat. Seeing them strung out so much and also with stragglers and Reinforcements from Brunswick in Berlin Saw an opportunity to strike hard where the enemy where at their weakest. The battle in the Zerbst Area was and extension of that strategy which worked for France. With Overwhelming results