The First Battle of Sackett's Harbor was fought on July 19, 1812 between the United States and Great Britain. The American forces repelled a British naval assault. The War of 1812 was fought between the United States and United Kingdom from 1812 to 1815, on land in North America and at sea around the world. ... July 19 is the 200th day (201st in leap years) of the year in the Gregorian Calendar, with 165 days remaining. ... 1812 was a leap year starting on Wednesday (see link for calendar). ... Casus belli is a Latin expression from the international law theory of Jus ad bellum. ... July 19 is the 200th day (201st in leap years) of the year in the Gregorian Calendar, with 165 days remaining. ... 1812 was a leap year starting on Wednesday (see link for calendar). ...