The commander ¹  orders ²  his officers; they stumble ³  as they advance; ⁴  they rush to the city wall ⁵  and they set up ⁶  the covered siege tower. ⁷ 

You are no more secure ¹  than Thebes ²  – she was located on the banks of the Nile; the waters surrounded her, her ³  rampart ⁴  was the sea, the water ⁵  was her wall.