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 when he learns of the existence of aliens with the power to annihilate the human race.
Jack Campbell
“Jack Campbell” is the pen name of John G. Hemry, a retired naval officer who graduated from the U.S. Naval Academy in Annapolis before serving with the surface fleet and in a variety of other assignments. He is the New York Times bestselling author of The Lost Fleet series and The Lost Stars series, as well as the Stark’s War, Paul Sinclair, and Pillars of Reality series. He lives with his indomitable wife and three children in Maryland.
The Lost Fleet
Series contains 6 primary works and has 6 total works. Current series reading order on below.
Related series The Lost Fleet: Beyond the Frontier
Related series The Lost Stars
Related series The Lost Fleet: Outlands