The Prussian Army supply system has broken down. All four corps are out of supply and suffering heavy attrition casualties. Blucher orders his Army to retreat to the main Prussian supply depot at Brandenburg.
Napoleon orders his Army to advance to Hannover to regroup and resupply
The Hannover campaign was the second phase in Northern Germany between the First French and the Prussian armies. It lasted 10 days and there were two battles. The Prussians won both battles.
The Prussian Army won this campaign phase, but was forced to retreat when their supply system broke down.
The campaign started on 28 May and finished on 16 September 2015