William Sadler was an Irish painter who was greatly influenced by what the Dutch were doing with paintings of great events. What stands out to me is the bright burst of white light in the middle of the painting. How can light vibrate like this in an oil painting? Masterful.
Sometimes a painting like this just tells the story for you.
We know that the night before Waterloo, the rains made the battlefield wet. I know that, in my story, the sorts of things that you see in this painting will be details that will make The Chasseurs react to what they find when they arrive. They will have spent days shadowing the armies, trying to avoid the confusion of calvary scouts and wayward units and deserters. They will find these rifles stacked everywhere and smell who owns them.
The way that dogs smell will mean a lot in this story. What a narrator or an all-knowing narrative might say can really be summed up by the fact that these dogs know what the Prussians, British, French and whoever else smelled like.
Storytelling tricks. You have to have them.
You don't want to get a cartridge box or a hat plume or a bridle strap out of place when you're working with Napoleonic era art. These detailed paintings are designed to help understand the proper dress of military figures of the era.
The Chasseurs will be somewhat heavy on these details, but mostly on how the horses look as they chase dogs through the summer days.
Dogs vs horses: my money is on the dogs.