Caesar is said to be the savior of apes and, like in the current Dawn, the sympathies of the viewer are with the apes. Gorillas, the frat boys of the ape universe, do indeed cause troubles, with Aldo becoming a kind of Cain who slays a fellow ape, Cornelius. (They even got the initials correct, if reversed.) Religion, and prejudice, it seems, have brought this fictional world to a crux, caught in an endless loop of new futures. As Virgil says, there are an infinite number of lanes on this highway. Presumably, traveling back in time opens up all kinds of possibilities.
Despite the number of reused shots in the film—the first ten minutes or so are simply a recapping of the previous two films—and the unfortunate pacing (how could a climax of two angry apes climbing a tree have possibly dragged on for so long?), the movie does have a message. Race tensions, high at the time, are overtly and covertly addressed. Disarmament is praised. The only future that seems not to exist is for one more movie. Interest moved on to science fiction’s apotheosis in Star Wars just four years later. Once again we would find ourselves in a world of black and white, with simple choices. There was no ambiguity among the Jedi. Still, for all that preaching, equality never did reach its goal. So even with its faults (didn’t we see that same tree-house bombed four times?) it is worth dusting off the Battle for the Planet of the Apes once in a while and pondering better possible futures.