Napoleonic Wars
From Tardis Wiki, the free Doctor Who reference
The Napoleonic Wars were fought in Europe in the early 19th century.
The Second Doctor prevented the Players from altering the outcome of the Napoleonic Wars. (PROSE: World Game)
Mr Beachem was born during the Napoleonic Wars, and Edward Grainger guessed that he was born in 1812 when recalling their encounter. (PROSE: Childhood Living)
Behind the scenes
According to The Terrestrial Index, a non-narrative source, the Napoleonic Wars may have been exacerbated when the Nemesis statue passed Earth in 1813. (REF: The Terrestrial Index)