There are 6 books in the The Lost Fleet series. The newest book is Victorious which came out in 2010.

The first novel in the New York Times bestselling Lost Fleet series!

The Alliance has been fighting the Syndics for a century—and losing badly. Now its fleet is crippled and stranded in enemy territory. Their only hope is a man who's emerged from a century-long hibernation to find he has…
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2
Fearless

Book cover of Fearless

Outnumbered by the superior forces and firepower of the Syndicate Worlds, the Alliance Fleet continues its dangerous retreat across the enemy star system.

3
Courageous

Book cover of Courageous
The Lost Fleet continues its perilous journey home. Badly damaged and low on supplies, the Alliance Fleet is raiding Syndic mines for raw materials and Captain 'Black Jack' Geary hopes they can continue to remain one step ahead of their enemies. But the Syndics are the least of Geary's worries…

4
Valiant

Book cover of Valiant
Legendary war hero Captain “Black Jack” Geary fights to stay ahead of his enemies in the fourth novel in Jack Campbell’s New York Times bestselling military science fiction series.

Deep within Syndicate World space, the Alliance fleet continues its dangerous journey home under the command of Captain John “Black Jack”…

5
Relentless

Book cover of Relentless

After successfully freeing Alliance POWs, 'Black Jack' Geary discovers that the Syndics plan to ambush the fleet with their powerful reserve flotilla in an attempt to annihilate it once and for all. And as Geary has the fleet jump from one star system to the next, hoping to avoid the…

6
Victorious

Book cover of Victorious
As war continues to rage between the Alliance and Syndicate Worlds, Captain 'Black Jack' Geary is promoted to admiral-even though the ruling council fears he may stage a military coup. His new rank gives him the authority to negotiate with the Syndics, who may finally be willing to end the…