We've roughly equated Corps to our Divisions, and so the French have three infantry Divisions, a cavalry Division and (of course!) La Garde. The Allies are organised - a bit unhistorically, but it fits the troops we have and the ground they have to cover - also into three (weaker) infantry Divisions plus a small cavalry Division.
This photo shows the view from the Allied right rear, behind Hougoumont looking west along the length of the field:
This gives a slightly more general view, also from the same end of the field:
The French forces have been arranged rather randomly (and indeed half are off-table in Reserve), and await the hand of Napoleon!
A week late, the Gods of War, Fate and the Four Horsemen of the Apocolypse finally turn up to party. Andy, by arriving first, bagged the role of Napoleon, ably assisted by Geoff and Paul, while Dave and Barry commanded the Allies.
Finally bursting into action, Napoleon opens hostilities, scoring some early artilllery success against the Allied batteries exposed on the front slop of the ridge.
The French launch an initial attack by d'Erlon's Division against the Allied left-centre, to the east of La Haye Sainte.
The French attack develops, with cavalry and light infantry moving up to cover the infantry brigades behind. Lancers have an early success against some shaken infantry.
The allies respond with a decisive charge by the Scots Greys, who smash the dragoons threatening the Allied centre.
On the French right, Lobau boldy pushes his troops forward towards Papelotte and the La Haye. Rashly, his cavalry assume Papelotte is unoccupied, only to be shaken by a brisk eruption of musketry from the Brunswickers defending the farm. In some disorder from this surprise, the leading French units are stunned by the eruption of a Prussian cavalry brigade from the woods to the east, who charge without hesitation.
The French pour infantry onto the Allied squares as the lancers exploit their success.