Bolos: Their Finest Hour (Bolo Series Volume 12)
Keith Laumer was a Captain in the US Air Force and later an officer in the Diplomatic Corps, serving all over the world, giving him a solid background both for his fast-moving adventure stories and his satirical comedies of Retief, the galaxy’s only two-fisted diplomat. His other popular creation was the Bolo—gigantic tanks controlled by artificial intelligences, fighting to protect mankind against both alien and human enemies. He was known as one of the top writers of SF adventure.