Hardy was haunted by a dream of a charge that had never happened.
In the dream, an Oleonese heavy lancer was charging at him and he was kneeling ready to fire his musket at the oncoming horse. He strategized that once the horse was downed, he would charge the cavalryman with his bayonet. He would wait until the horse was a cart's length from him and then fire.
3.. 2.. 1..
And then he always woke up.