The victory over Jones is a bitter-sweet one. Soon, life on the farm is in just as bad of a state as it was in the beginning under the farmer. There is needless suffering because of a similar goal for control and power. Although the animals tried to separate themselves from the humans, the pigs become more and more like them as the story progresses. They defeated the very purpose of their revolution. The lose what they had stated they could gain.
There are two places in the novel where the animals celebrate a major victory. The first celebration occurs when Farmer Jones is run off. This is the beginning of the revolution but there was no advance planning for it. When Napoleon leads the animals back to the storage shed and serves everyone a double ration of corn, he has assumed the role of leader in a supposedly "classless" society. The animals also notice the milk has disappeared. So the first deception by the pigs following immediately after the first celebration. The second celebration occurs after the Battle of the Cowshed. However, during the battle Boxer is upset because he thought he killed someone, but Snowball tells him "the only good human is a dead one." Thus, Snowball reveals that like all tyrants the ends justify the means." This opens the way towards other deceptions and the trustworthy Boxer's ultimate demise.