See higher-res versions on Wikipedia.
No. 4.– The picture represents the Vicious State, or State of Destruction. Ages may have passed since the scene of glory – though the decline of nations is generally more rapid than their rise. Luxury has weakened and debased. A savage enemy has entered the city. A fierce tempest is raging. Walls and colonnades have been thrown down. Temples and palaces are burning. An arch of the bridge, over which the triumphal procession was passing in the former scene, has been battered down, and the broken pillars, and ruins of war engines, and the temporary bridge that has been thrown over, indicate that this has been the scene of fierce contention. Now there is a mingled multitude battling on the narrow bridge, whose insecurity makes the conflict doubly fearful. Horses and men are precipitated into the foaming waters beneath; war galleys are contending: one vessel is in flames, and another is sinking beneath the prow of a superior foe. In the more distant part of the harbor, the contending vessels are dashed by the furious waves, and some are burning. Along the battlements, among the ruined Caryatides, the contention is fierce; and the combatants fight amid the smoke and flame of prostrate edifices. In the fore-ground are several dead and dying; some bodies have fallen in the basin of a fountain, tinging the waters with their blood. A female is seen sitting in mute despair over the dead body of her son, and a young woman is escaping from the ruffian grasp of a soldier, by leaping over the battlement; another soldier drags a woman by the hair down the steps that form part of the pedestal of a mutilated colossal statue, whose shattered head lies on the pavement below. A barbarous and destroying enemy conquers and sacks the city. Description of this picture is perhaps needless; carnage and destruction are its elements.
https://en.wikipedia.org/wiki/The_Course_of_Empire_(paintings)
