BattleTech: Legends: Path of Glory by Randall N. Bills

BROTHERS IN ARMS...

For MechWarrior Zane, allegiance to the Nova Cat Clan comes above all else. So when he sees his clan disgraced, cast out, and suddenly allied with the hated Inner Sphere, Zane's only desire is to see the Nova Cats returned to their former greatness.

For Palmer Yoshio, the Draconis Combine is the only honorable thing in a chaotic galaxy. But when he is forced to train alongside the outcast Nova Cats, he finds his own notion of honor is a far cry from his leader's.

Now, for Zane and Yoshio, the line between friend and foe will be drawn in the blood of the fallen comrades—and neither warrior will be able to look at their universe in the same way again...