History of the Peloponnesian War

Meanwhile the Boeotians at once sent for darters and slingers from the Malian gulf, and with two thousand Corinthian heavy infantry who had joined them after the battle, the Peloponnesian garrison which had evacuated Nisaea, and some Megarians with them, marched against Delium, and attacked the fort, and after divers efforts finally succeeded in taking it by an engine of the following description.