First off I'm a big fan of Jack Campbell. I've read (and re-read) the Lost Fleet series, am reading the Lost Fleet: Beyond the Frontier series and now the Lost Stars series. Within those series there are some real classics but, to my mind, this latest addition is the best yet. It really does have everything. Firstly, it has some really strong lead and support characters - the action around President Iceni and General Drakon is excellent. Particularly the antics of Drakon's two closest assistants Roh Morgan and Bran Malin. There is also lots of intrigue as the former Synidic CEO's negotiate with Admiral John Greary (of Lost Fleet fame) and also a really fantastically written space battle between - which is an area Jack Campbell has always excelled.
Without giving away all the details this is a "must read" for any fan of Lost Fleet, military sci fi or anybody who is looking for a good story with strong characters, a powerful setting and rapid action.