The Battle of Hastings between Anglo-Saxon and Norman forces (Tom Lovell, 1966)
Tom Lovell had this ability to make historical paintings feel like photojournalism — you get the chaos and weight of a 10th October 1066 without it feeling sanitized. Historical Info sends the Hastings date every year and what strikes me is how differently English history reads depending on whether you think the Norman conquest was a catastrophe or a catalyst