Keyser, Thomas de – Officieren en andere schutters van wijk III in Amsterdam onder leiding van kapitein Allaert Cloeck en luitenant Lucas Jacobsz Rotgans, 1632 Rijksmuseum: part 4

The picture has something of this: people, group, woman, weapon, man, wear, lid, veil, military, war, offense, many, outfit, music, portrait, performance, costume.
Perhaps it’s a painting of a group of men standing next to each other in front of a crowd of men in black coats and hats, all of which one man is holding a flag.