Conversation so far:
What are the Napoleonic Wars?
The Napoleonic Wars were a series of major conflicts pitting the French Empire and its allies, led by Napoleon I, against a fluctuating array of European powers.
When did the Napoleonic Wars take place?
The Napoleonic Wars took place from 1803 to 1815.

Question: Who was involved in the wars?
Self-contained rewrite: Who was involved in the Napoleonic Wars?