Germanicus after the Disaster of Varus Lionel-Noël Royer (1852-1926)

The picture has something of this: people, group, many, cavalry, man, woman, mammal, skirmish, war, wear, tree, weapon, crowd, flame.
Perhaps it’s a painting of a group of men on horses in a wooded area with a man on a horse in the foreground and a man.