Did yellow fever led to the defeat of the french troops by Haitian army?

Yes, yellow fever played a significant role in the defeat of French troops during the Haitian Revolution. The disease decimated the French forces, killing tens of thousands of soldiers who were unaccustomed to the tropical climate and its diseases. This weakened the French military's ability to suppress the rebellion led by enslaved and free Haitians, ultimately contributing to Haiti's successful fight for independence. The combination of yellow fever and fierce resistance from the Haitian army led to the French retreat.