Last Command - Lindsay Buroker

Last Command is the prequel to the Fallen Empire series. You can only get it in the omnibus collection of the first three book, but it's free and worth reading.

Colonel Hieronymus "Leonidas" Adler is on the secret asteroid base guarding the emperor and his command staff from a surprise attack by the Alliance. Someone leaked the location of the secret base and the Alliance is throwing everything they can at it. When things get desperate the emperor chooses Leonidas to guard his only living son and heir Thorian. Can they escape the Alliance? Can Leonidas get Thorian to the Starseekers where he can be safe and trained to use his powers? The rest of the series proves he can, but what he has to go through to do so is worth reading about. Very highly recommended.