Other mistake: When the gunman is sitting in the boss' office, the morning after failing to bring Bruce to him, he is shown with a black eye, band aid on his forehead, and the other eye swollen - despite only receiving strikes to the midsection by Bruce the night before.
Other mistake: There was no way the dining room could have filled up with that much water in that amount of time.
Other mistake: It makes no sense that the pimp would die from having the tip of his tongue bitten off. (00:23:35)
Other mistake: During the opening sequence there is a shot of a muddy river where we are shown the credits for Director of Photography, Camera, Sound, Film Editor etc. When "Camera" is credited there is a number 2 next to it, that is the order in which the credit appears, but none of the other credits are numbered. (00:06:20)
Suggested correction: That's not a mistake. Fransisco Joán and Orlando Macchiavello were second cinematographers (2. Kamera in the original German film credits).
Other mistake: We know that, after Cornelius and Zira were executed at the end of the previous movie, "Escape from the Planet of the Apes," baby Caesar was only an infant who was just starting to say "Mama." In "Conquest," we know that 20-year-old Caesar was raised (and secretly educated) by Armando, the circus owner. But, after 20 years of being raised and secretly educated by Armando (who has a thick Mexican accent), Caesar has a distinct British accent.