Pariah by P.M. Griffin

When mechanical problems strand the Commandos on the ocean planet Elaine of Avalon, the unit struggles to get their ship airborne again. Unfortunately, this tiny world suffered a tragic loss at the hands of the Arcturians during the War. Specifically, at the hands of one Admiral Varn Tarl Sogan. It's a wound they never forgot. They want revenge.

As the commandos grapple with an escalating conspiracy, the planet itself seems set against them. The monsters of Elaine's deeps swirl to the surfac...