This is a painting viewed through an archway

This is a painting viewed through an archway. In the foreground, a group of figures in ancient Greek armor and attire are engaged in what appears to be a battle or a procession. Some figures are holding shields and spears, and there are horses present. In the middle ground, a fleet of sailing ships is positioned on a body of water, with a coastal city visible on the cliffs in the distance. The city is densely packed with buildings and has a prominent tower. The background shows a landscape with hills and a sky filled with clouds. There is no visual information in the image that can be used to identify the location as Katerini Municipality, Greece, or any specific geographical location. The scene depicts an ancient historical or mythological event.