First he was murdered by henchmen of an illegitimate usurper, then the fake news kicked in. :^)
Henry didn’t take part in the battle. He only emerged from his tent after Richard had been brutally executed. I still love the fact that Richard took down one of his giant bodyguards with a single blow of his battle ax. When you see how his scoliosis affected him, you can see his courage and determination and strength! What a guy.