Paul responded well by cobbling together a strong line behind the ridge.
I sent forward a formidable combined-arms attack, and both lines clashed with an immense ferocity.
The Brunswickers and Hanovarian Landwehr units fought like lions with support from British Heavy Dragoons and Dutch Hussars, and Horse artillery, and my attack was beaten back.
Now the pressure from the Prussians started to exert itself again. I was tempted to fall back to reorganize again, but realized that if I did, I might never regain the initiative, and would be ground down by superior numbers. Instead, I gambled with an 'Out of Ammunition' card, which allows me to move any five units, but afterward I must remove 2 artillery units from the battle.
I moved my weakened cavalry forward again against the British right flank, supported by what was left of my infantry, and drove them back. When Paul tried to counter with 2 fresh units of British infantry from his center, my Chasseurs heroically shot them down and forced them back as well.
A half broken line of weakened militia grade infantry and Dutch cavalry clung to the edge of the battlefield. I knew that one more push could drive them off and break the British army's morale. The infantry went forward once again with the skeletal remains of my heavy cavalry supporting it's attack.
The only fresh unit of infantry in that part of the field was French, and it marched to within 30 yards of the Brunswickers' square and fired...
As the Brunswickers fled the field, they swept Wellington along with them and all cohesion went out of the British/ Allied force in that sector of the battlefield. The stream of retreating men soon became a raging torrent as the realization that the battle was lost spread from the broken British right to their center and then on to the left. Soon, the Prussians saw that they stood alone on the field, and tried to retreat back from where they came. Unfortunately Grouchy had been victorious at Wavre and they had no escape route. Those that did not flee, were soon rounded up.
Napoleon marched his victorious army into Brussels the next day.