Napoleon landed on St. Helena
Napoleon Bonaparte landed on St. Helena in the Atlantic where he was exiled after the Battle of Waterloo. St. Helena was heavily guarded during his exile, with British troops and naval ships patrolling around the island.

Napoleon died on St. Helena in 1821.

Battle of Jena–Auerstedt
In the parallel Battle of Auerstedt eighteen kilometers away, Marshal Louis Nicolas Davout defeated the main Prussian army, even though his army was smaller than the Prussian force.

In total, more than 200,000 soldiers took part in the double battle, which lasted only a few hours.

This decisive Prussian defeat occurred only nineteen days after the country had mobilized its army and removed Prussia from the anti-French coalition until the War of Liberation in 1813.