Keith Laumer 
Bolo 
The Annals of the Dinochrome Brigade

Unrivaled in the history of artillery and unsurpassed in its ability to reason, Bolo replaced man in that most human of endeavors: war.In these scintillating tales of the ever-advancing Dinochrome Brigade, the most effective weapons ever devised ell their own story in action-packed chronicles of extra-terrestrial adventure. Bolo: fighting in proud combat as monster saviors of their human creators.