 The crossing of the Saint Lawrence by the American troops was observed by Quebec militia, who alerted British troops at Trois-Rivières. A local farmer led the Americans into a swamp, enabling the British to land additional forces in the village, and to establish positions behind the American army. After a brief exchange between an established British line and American troops emerging from the swamp, the Americans broke into a somewhat disorganized retreat. As some avenues of retreat were cut off, the British took a sizable number of prisoners, including General Thompson and much of his staff.
