 He led 300 Caughnawaga Indians to reinforce the militia at Lacolle who were then transferred to Upper Canada in 1813 and based at Burlington Heights along with other native warriors.At the Battle of Beaver Dams, Ducharme organized a party of warriors who effectively forced the American detachment to surrender.Returning quickly to Lower Canada, Ducharme was placed under the command of Lieutenant-Colonel Charles-Michel d’Irumberry de Salaberry; for his participation in the Battle of Châteauguay on 26 October he was later awarded a medal and clasp.