War of 1812: British troops and Mohawk warriors repelled an American invasion from across the Niagara River at the Battle of Queenston Heights near Queenston, Ontario.

The War of 1812 was fought by the United States and its allies against the United Kingdom and its allies in North America. It began when the United States declared war on Britain on 18 June 1812. Although peace terms were agreed upon in the December 1814 Treaty of Ghent, the war did not officially end until the peace treaty was ratified by the United States Congress on 17 February 1815.

The Mohawk, also known by their own name, Kanien'kehá:ka, are an Indigenous people of North America and the easternmost nation of the Haudenosaunee, or Iroquois Confederacy.

The Niagara River flows north from Lake Erie to Lake Ontario, forming part of the border between Ontario, Canada, to the west, and New York, United States, to the east. The origin of the river's name is debated. Iroquoian scholar Bruce Trigger suggests it is derived from a branch of the local Neutral Confederacy, referred to as the Niagagarega people on several late-17th-century French maps. George R. Stewart posits that it comes from an Iroquois town named Ongniaahra, meaning "point of land cut in two."

The Battle of Queenston Heights was the first major engagement of the War of 1812. The battle took place on 13 October 1812 at Queenston in Upper Canada and was a decisive British victory.

Queenston is a compact rural community and unincorporated place 5 kilometres (3.1 mi) north of Niagara Falls in the Town of Niagara-on-the-Lake, Ontario, Canada. It is bordered by Highway 405 to the south and the Niagara River to the east; its location at the eponymous Queenston Heights on the Niagara Escarpment led to the establishment of the Queenston Quarry in the area. Across the river and the Canada–US border is the village of Lewiston, New York. The Lewiston-Queenston Bridge links the two communities. This village is at the point where the Niagara River began eroding the Niagara Escarpment. During the ensuing 12,000 years the Falls cut an 11 kilometres (6.8 mi) long gorge in the Escarpment southward to its present-day position.