Although Napoleon’s French army outnumbered Wellington’s troops, Napoleon needed to defeat the enemy before nightfall, because Wellington was to receive reinforcements from the Prussian army that night.
Meskipun pasukan Prancis di bawah Napoleon jauh lebih banyak daripada pasukan Wellington, Napoleon harus segera mengalahkan mereka sebelum malam tiba, karena Wellington bakal mendapat bantuan pasukan Prusia pada malam itu.