The Senior - The Paul Brennon Chronicles, #2

Paul Brennon, having taken control of the mighty Rohal fleet, and ended the ten year war between Rohal and Earth, is on his way back to Rohal to take up his position as Senior of the fleet. Unfortunately he appears to have lost the remains of his fleet. After he is attacked by ships from a local neighbour of Rohal, and saved by a straggler from his own fleet he learns that there is more trouble waiting for him when he gets to Rohal.
It seems that while Bracknet and the mighty Rohal fleet were otherwise engaged, the local planets were making their own plans.