Chat or chatchasteil) was a movable pent-house used to protect besiegers when approaching a wall or gateway, for the purpose of sapping, mining or direct attack, or to cover a ram or other battering-engine.
Tents, baggage-carts and battering-rams were carried on the march, and the tartan or commander-in-chief ranked next to the king.
In 1813, when he was before San Sebastian, the ammunition ran short; a battering train, long demanded, reached him not only some time after it was needed, but even then with only one day's provision of shot and shell.
Other causes of offence arose, and Napoleon in his last communication to them warned them not to imitate the Greeks of the later Empire, who engaged in subtle discussions when the ram was battering at their gates.
The Ciudad gallantry of the troops made it successful, though with Rodrigo, the loss of Generals Craufurd and McKinnon, and 1300 ulfrary s men, and Marmont's battering train of 150 guns here fell into the allied hands.