Purdy's men spent a miserable night marching through swampy woods in pouring rain, becoming quite lost. As dawn broke on 26 October, they located the correct trail, but inexperienced or unwilling guides first led them about mid-morning to a point on the river opposite de Salaberry's forward defences. Some time after noon, Purdy's brigade encountered the detachment de Salaberry had posted to guard the ford. Captain Daly, leading the light company of the 3rd Select Embodied Militia, launched an immediate attack against the Americans, while other Canadian troops engaged them from across the river. The Americans were thrown into confusion and driven back. Captain Daly and Captain Brugière were severely wounded and their men withdrew, but when the Americans tried to pursue they once again came under fire from the north bank of the Chateauguay and were again thrown into disarray.