Spacers Series by Scott Bartlett

March 15th, Earth Year 2290 The day the aliens returned. The memories are still fresh. Of colonies burning. Of millions dying in agony. 50 years later, we’ve built up our strength. Using a wormhole, we colonized both sides of the galaxy. It was the worst mistake we could have made. Our enemy has returned and the wormhole has collapsed. Commander Thatcher finds himself on the wrong side of the divide. Separated from his pregnant wife by countless light years... moreMarch 15th, Earth Year 2290 The day the aliens returned. The memories are still fresh. Of colonies burning. Of millions dying in agony. 50 years later, we’ve built up our strength. Using a wormhole, we colonized both sides of the galaxy. It was the worst mistake we could have made. Our enemy has returned and the wormhole has collapsed. Commander Thatcher finds himself on the wrong side of the divide. Separated from his pregnant wife by countless light years. He’s just been given command of a light armored cruiser. His first command. If he ever wants to see his wife again, he’ll need to do the impossible. To defeat this enemy, he will need to reinvent space warfare. So that’s just what he’s going to do. less

It's not the size of the ship in the fight... It's the size of the fight in the ship. The Xanthic are hitting the Dawn Cluster hard. All signs point to their invasion beginning with a star system in the distant north. To stop it, Commander Thatcher and Veronica Rose put together the biggest fleet they can - a force that still seems hopelessly small. With that, they set sail against impossible odds, to see if a miracle can be worked one more time.