Your answer is the garrison in petrograd joining the soviets! :)
After a siege of sixty days the French army was defeated by the Viet Minh. The significance is that up to that point France and the rest of the world considered the Viet Minh as very primitive; however they were met by well armed and trained forces, being a kind of advance of what would come later in Vietnam. In the more immediate it ended the colonial dream of France in the area.
One of the reasons why Napoleon could be classified as an enlightened monarch is because although he was despotic in many ways, he was very tolerant of different religions and customs within his empire.