Corrected entry: This all takes place twenty years after the events of Escape from the Planet of the Apes. Toward the end, Zira's baby was named Milo, in Dr. Milo's memory. However, in this movie, he is twenty years old, and called Caesar.
Bishop73
18th Sep 2016
Correction: Armando was also trying to protect Milo and could not let anyone know he was the son of Zira and Cornelius. He simply changed his name to hide his true identity and he grew up with the name Caesar.
Bishop73