Apart from history buffs, the conflict between the young United States and Britain in 1812 is a war – which ended in 1815 – that few people today know or care much about. The US Navy, justifiably proud of its performance in that campaign, is commemorating it, unsurprisingly as we are now in the 200th anniversary spot. The war was famous, among other things, for this doughty US Man O’War, the mighty USS Constitution, a ship that became known as “old Ironsides” on account of how British ships’ broadsides appeared to make little dent in its sides.
Among other things, the War of 1812 is a reminder of how “trade wars” can turn into military ones. This Wikipedia entry about the conflict seems pretty comprehensive in explaining some of the main causes and battles.