By July 4, 1814, word had reached Riall that the Americans had taken Fort Erie. Anticipating that Fort George would be the next target, Riall and his men entrenched around Chippewa Creek. When Scott's men appeared, Riall's men immediately drove them back out of range. British skrimishers encountered militia men under General Peter Porter. This, combined with the dusty gray uniforms of Scott's men led Riall to erroneously believe that he was dealing entirely with militia. He ordered an advance across the bridge.
Instead, Riall met with well-trained regulars. Scott's forces held their positions, inflicting substantial casualties on the British. When American reinforcements arrived, Riall crossed back across the bridge, which was immediately seized by the Americans, and eventually retreated into Fort George.