The Promenade at Argenteuil Gustave Caillebotte (1848-1894)

The picture has something of this: building, architecture, home, house, people, military, tree, landscape, town, calamity, war, outdoors, city, flag, daylight, group.
Perhaps it’s a painting of a street corner with a tree in the foreground and a building on the far side of the street with a flag pole.