Starfighter Series by Hamlet Machine

Cain and Abel are transferred to the battleship Sleipnir for a critical mission, and the further they venture into enemy space, the deeper their relationship becomes. As Cain struggles to make a name for himself among his new shipmates, the Commanders assign Abel to a project that may give the Alliance a decisive advantage in the war against the Colterons. The Commanders, however, may not necessarily have Abel's best interests at heart…

While en route to the assault on the Colteron shipyard, Cain's troubled past comes back to haunt him when he is forced to confront the feelings he has developed for Abel. Can Cain ignore his guilty conscience and draw Abel even closer, or will jealous rivals aboard the Sleipnir succeed in driving them apart?

During the climactic battle at the Colteron shipyard, Cain's explosive secret is finally revealed. Now that Abel knows the truth, the corrupt commanders aboard the Sleipnir are determined to silence him. Even if Cain and Abel manage to escape, what will this revelation mean for the bond they've developed?