The retreat of the Prussians was not interrupted, and was seemingly unnoticed, by the French. Crucially, they retreated not to the east, along their lines of communication and away from Wellington, but northwards, parallel to Wellington's line of march and still within supporting distance, and remained throughout in communication with Wellington. They regrouped south of Wavre, around march to the east of Waterloo, from whence they proceeded to Waterloo on 18 June.
