- Oct 13 Battle of Queenstown Heights: British forces defeat United States forces attempting to invade Canada
- Oct 14 Work on London's Regent's Canal starts.
Event of Interest
Oct 19 Napoleon Bonaparte and his Grande Armée begin their retreat from Moscow numbering just 100,000 (started campaign with 500,000)
Napoléon Bonaparte
- Oct 22 Duke of Wellington seizes Burgos, Spain
- Oct 23 Failed coup against French Emperor Napoleon Bonaparte
- Oct 24 Napoleonic Wars: The Battle of Maloyaroslavets takes place near Moscow, French army then forced to retreat through the snow towards Smolensk
- Oct 25 US frigate United States captures British vessel Macedonian