Aquellos años (1973)

Maybe the best movie about the arrival of Maximilian from Habsburg to Mexico, sent by Napoleon III with the support of the conservative power, during the mid-1860's. Republican president Benito Juarez begins his war against Maximilian, settled in Chapultepec Castle with his wife Carlota. Battles like the "May the 5th", at Puebla City against the French invasion, and the fall down of Maximilian at Queretaro City, are portrayed with accuracy in this powerful war epic.