The Lost Fleet is a six book series of military sci-fi written by Jack Campbell. In the first book of the series Dauntless we are introduced to Captain Black Jack Geary who has just been thawed out of suspended animation after 100 years. Captain Geary has been elevated to near mythical levels by the Alliance as he used his command to fight a delaying action at the beginning of the war over 100 years ago. The Alliance forces find Geary on the way to attack the Syndicate home system in a bid to end the war. They see the resurrection of Geary as a good omen. However, they are about to fall in a Syndicate trap. One that only Geary can save them from.
I really liked this series a lot, reading all the books in a 3 week period. The writer has a military background and he writes the naval battles very well using some realistic physics. The books are not all space battles though and they offer some good characterization, albeit over a small number of main characters.
It was also very interesting to me to see the parallels between Captain Geary and King Arthur. Arthur is supposed to return to Britain to save them in their time of greatest need and that's exactly what Geary is doing here for the Alliance.
I recommend all the books in this series as a buy.