To attack whatever force Blucher might command, and the Guard and Milhaud would be at hand to act as reserve.
The Guard and Milhaud were in hand at Fleurus.
Amand, whilst Gerard attempted to storm Ligny; on the right Grouchy held Thielemann in play, and in the centre near Fleurus were the Guard and Milhaud in reserve, close to the emperor's headquarters on the mill.
A crashing salvo of 60 guns gave the signal for a combined assault to be delivered by Gerard and the Guard, with Milhaud moving on their right flank.
The right of Milhaud's cuirassier corps, whilst marching from Marbais to Quatre Bras, saw a column of Prussian infantry retiring towards Wavre, and Milhaud reported this fact about 9 P.M.