What is the largest french war?

The largest French war is typically considered to be the Napoleonic Wars, which lasted from 1803 to 1815. These conflicts involved numerous European nations and were centered around the expansion of French influence under Napoleon Bonaparte. The wars culminated in significant battles, such as the Battle of Waterloo, and ultimately led to Napoleon's defeat and the restoration of monarchies across Europe. The Napoleonic Wars had profound effects on European politics and society and reshaped the continent's borders.