March 1815

Wednesday 01:

Napoleon returns to France from his banishment on Elba.

Thursday 16:

Prince Willem of the House of Orange-Nassau proclaimed himself King of the United Kingdom of the Netherlands, the first constitutional monarch in the Netherlands.

Monday 20:

1815 – Napoleon enters Paris after escaping from Elba with a regular army of 140,000 and a volunteer force of around 200,000, beginning his "Hundred Days" rule.