War for New Terra Books 1-3: Books 1, 2 and 3

We knew the cockroaches would inherit the Earth. We just didn't think they'd take over our next planet, too.
The Earth is gone, and its survivors are in desperate need of a new home. Trapped on board Arks orbiting New Terra, the UEC fleet orders a full invasion. The planet is theirs if they want it… they just need to clear out the massive bug infestation first.
Ginger and her squadmates in Fireteam Sigma are no strangers to alien worlds – this isn't the first planet they've tried to colonise. But they've never gone up against an enemy like this before: hungry, seven foot roaches capable of biting a marine in two. It's going to take everything Sigma's got – and more – to survive.
Can Fireteam Sigma liberate the first New Terran city? Or has humanity simply delayed its own extinction?