The war is not black and white, but rather two equally bad warmongering races, one of which unwittingly created the threat of the other.
Learning the Locusts are not in fact underground aliens, as a new player might reasonably assume, but creatures created through the unethical experiments of human scientists made them seem a lot more sympathetic. RELATED: 10 Games To Play If You Liked Gears Tactics While the COG never had the moral high ground, the Locusts' motives becoming more understandable helps to emphasize that there are no real good or bad guys, just two sides with their own reasons for fighting.
One of the best parts of Gears 5 going deeper into the background of the Locust war, to the point of finding out how they originated in the first place.