Honor's Reserve. Galaxy Mavericks, #1

The galaxy is at war. The only person who can save it is a soldier from the reserves. Petty Officer Grayson McCoy's last mission in the Galactic Guard is simple: intercept a mysterious spaceship at the galaxy border. When Grayson discovers the criminals onboard the ship are human traffickers carrying human cargo, he risks his life to save a group of strangers he's never met. That's when the real bad guys show up.
Stranded behind enemy lines, the fate of twelve innocent people rest on what Grayson does next. So does the fate of the galaxy. V1.0