Rousseau (91) Henri Julien Felix Rousseau (1844-1910)

The picture has something of this: military, war, cavalry, weapon, people, army, soldier, skirmish, gun, battlefield, uniform, group, man, vehicle, wear, cannon, group together, battle, recreation.
Perhaps it’s a group of men standing next to each other in front of a painting of a man with a gun in his hand and another man holding.