High Quality Content by WIKIPEDIA articles! The Quebec Expedition, or the Walker Expedition to Quebec, was a British attempt to attack Quebec in 1711 in Queen Anne`s War, the North American theatre of the War of Spanish Succession. It failed because of a shipping disaster on the Saint Lawrence River on 22 August 1711, when seven transports and one storeship were wrecked and some 850 soldiers drowned; the disaster was at the time one of the worst naval disasters in British history.