John Codman Ropes,
The Campaign of Waterloo: A Military History
“ One must needs have been a witness of the rapid march of this army on the day of the 17th,—a march which resembled a steeplechase rather than the pursuit of an enemy in retreat,—to get an idea of the activity which Napoleon knew how to impress upon his troops when placed under his immediate command. Six pieces of the horse-artillery of the Guard, supported by the headquarters squadrons, marched in the first line, and vomited forth grape upon the masses of the enemy’s cavalry, as often as, profiting by some accident of ground, they endeavored to halt, to take position, and retard our pursuit. ”

