Titan
Titan, the largest moon of Saturn, was the site of a fierce war over the ownership of the moon which resulted in heavy loss of life. The moon remains in the early stages of being terraformed, supporting a atmosphere and some transplanted life that are suited to the still desert like climate the moon possesses. There are few colonies on the moon as it’s ownership is still being contested on diplomatic fronts and due to it’s still somewhat unlivable climate, though it is expected that more transplanted life will be possible in the new few years.