Despite hearing the cannon sound from nearby Waterloo , he decided to follow the Prussians along the route literally specified in his orders while the Prussian and British - Dutch armies united to crush Napoleon .
On 17 June , Grouchy was unable to close with the Prussians .
Despite hearing the cannon sound from nearby Waterloo , Grouchy decided to follow the Prussians along the route literally specified in Grouchy 's orders while Prussians Prussian and British - Dutch armies united to crush Napoleon .
On 17 June , Grouchy was unable to close with the Prussians .