The Lost Fleet: Outlands book 1 -- the third series. Spoilers ahead for the first two.
Opens with delivering evidence, facing assassination attempts, hearing progress, and getting orders.
It includes a shakedown journey with leave in the middle, negotiations, Black Jack being significant,
Syndicate prisoners, objections to calling the Dancers by that name even though they won't tell their own (they answer we or us when asked), and more.