A.B.C. Warriors: 4: Volgan War

Paperback
Mars, the far future. War droids created for a conflict that ended centuries ago, the A.B.C. Warriors are resistant to Atomic, Bacterial and Chemical warfare. Recruited to bring peace to the civil war-ravaged frontier colonies on Mars, the Mek-nificent Seven have to bring all their skills to bear on the intractable conflict, with friends and enemies changing sides, there's no knowing how this will end.