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The Battle of the Border was an assault launched by the Northern Military against the base of the renegade group Alpha-Omega. It marks the culminating battle of the Human-Ape War.


During the first stage of the battle, the Northern Military bombarded the base of Alpha-Omega with a aerial attack, catching the Alpha-Omega soldiers off guard as they took positions on the fortifications. The Alpha-Omega soldiers fired back with anti-aircraft turrets, blowing most of the helicopters out of the sky. Colonel J. Wesley McCullough was unable to lead the defense due to infection from the virus from contact with Nova's doll and committed suicide.

Soon, the rest of the Northern Army's ground forces emerged and attacked the base with tanks, mortars, and infantrymen, leading to a massive full-scale attack of the base whilst the apes could only take cover from the fighting. After losing all their aircraft, the Northern Army was left with only ground forces to attack the base. During the battle, humans noticed the apes escaping and began shooting at them. Twenty Apes were killed in the crossfire.

Ultimately, the battle was won by the Northern Army after Caesar threw a grenade on a fuel depot which led to a chain reaction that destroyed the entire base. However, celebrations by the northern soldiers were cut short when an avalanche generated from the explosion wiped out both human armies completely.


With the human armies subsequently annihlated by the massive avalanche, Caesar and the other apes escaped and survived by climbing nearby trees. The apes departed and crossed the desert to find the oasis, which they made their new home. During this time, Caesar succumbed to his wound from the battle and died while taking one last look at his kind who were finally free from war.