The War of 1812 was an event that included the two nations the United States and the United Kingdom.
 Carl von Clausewitz said, 'Every age has its own kind of war, its own limiting conditions, and its own peculiar preconceptions
=== Largest by death toll ===The deadliest war in history, in terms of the cumulative number of deaths since its start, is World War II, from 1939 to 1945, with 7085 million deaths, followed by the Mongol conquests at up to 60 million

