Invincible might be my favorite of the Lost Fleet series yet, as Geary is faced with two major problems outside his experience simultaneously. The first are hostile aliens with a fleet focused around massive super-battleships and swarms of ramming missiles. And the second are potentially friendly aliens, with lighter but still superb ship handling skills.

The seizure of the Kicks super-battleship is one of the best set pieces of the book, and while they are unrelentingly hostile, the hostility of a herd species is something relatively new. The other aliens, the Dancers, are typical hideous space bugs, but at least they're willing to talk, if only cryptically.

Having completed his mission, it's back home to human space.