On 29 March, Napoléon put him in charge of the commission charged with placing half-pay officers and on 7 June he was given command of the 11th infantry division, 3rd army corps, armée du Nord. He fought at Ligny on 16 June, where his horse was shot from under him, and after Habert was badly wounded at Wavre took over command of his division. He drove eight Prussian battalions from the heights at Bierges. On 20 June, Dominique Vandamme put him in command of two more infantry divisions and commanded him to hold up the enemy to buy time for Marshal Grouchy to take up position at Dinant - this led to a fierce battle beneath the walls of Namur in which Berthezène's horse was again killed under him.