 One of the stories in Rogue Bolo chronicles the actions of Combat Unit CSR, who identifies an alien threat to humanity but is forced to go "rogue" in order to defeat it (possibly for dramatic effect, as it does not appear to be explained why the bolo did not simply inform its commanders of the threat).Bolos as envisioned by Laumer in his future history military SF are described as autonomous armoured fighting vehicles of immense size.While the early versions are in the range of a few hundred tons, the "Mark XXXIII", a standard model appearing in the series, weighs 32,000 tons.