On May 25th 1813 at day break, the Americans began heavy artillery bombardment of Fort George, a prelude to an invasion. The bombardment all but destroyed Fort George leaving the British with little fortification.
On May 27th 1813, the Americans invade Newark (Niagara on the Lake) from Fort Niagara. Badly out numbered, the British abandon Fort George and retreat west to Stoney Creek (Hamilton/Burlington) with the Americans in pursuit.
On June 5th 1813, the Americans reached Stoney Creek. Here the British and their Native American allies attacked the Americans. During the battle, the Americans were forced to retreat back to Fort George in the Niagara Peninsula with the British now in pursuit. The Americans were able to fight off the British attack at Fort George.