Bolos
Book 2: Old Soldiers

Captain Maneka Trevor was the sole human survivor of the Dinochrome Brigade's 39th Battalion ... but she hadn't wanted to be one. The Bolo known as "Lazarus"—Unit 28/G-179-LAZ—was the 39th's sole surviving Bolo ... but he hadn't been hers. The doctors and the Bolo techs have put them both back together again, yet there are wounds no doctor or technician can heal. And now Maneka and Lazarus must serve together once again, in a war whose stakes are literally the survival or extermination of the human race.