Exodus: Empires at War: Book 12: Time Strike

The New Terran Empire is still trying to recover from the Ca'cadasan strike that left over three hundred million dead and ripped the heart out of the ship production of Central Docks.

The Donut, the huge station in orbit around the Supersystem black hole, was almost destroyed in that strike, and its defenses have been strengthened considerably.

That Caca strike didn't do all they had wanted, but it had hurt the Empire's war making capabilities. The...
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The New Terran Empire is still trying to recover from the Ca'cadasan strike that left over three hundred million dead and ripped the heart out of the ship production of Central Docks.

The Donut, the huge station in orbit around the Supersystem black hole, was almost destroyed in that strike, and its defenses have been strengthened considerably.

That Caca strike didn't do all they had wanted, but it had hurt the Empire's war making capabilities. The Ca'cadasans are at it again, with a two-pronged attack on the Empire. Sean has to decide, and quickly, how his fleet is to counter this move. The fleet, short of resources, could use the almost thousand ships destroyed and damaged in the enemy strike. And Sean would give his soul to get his heir, killed in the Caca strike, back. The lure of changing time, something he learns is very possible, beckons. Despite the warning that time travel was the undoing of the Ancients who had once ruled his sector of space. But the Ancients are not extinct, and they will do whatever they can to prevent the humans from disrupting the time stream and destroying their own race. Even if it means destroying the one weapon the humans have that might win their war of extermination against the Ca'cadasan Empire. They will try to prevent the Time Strike with their last resources, with their lives.

The saga continues, as massive Empires war with each other across thousands of light years of space.