Hammer's Slammers series (or the Hammerverse, Slammerverse, Slammers universe, Hammer universe) is a setting for a series of military science fiction short stories and novels by author David Drake. The series follows the career of a future mercenary tank regiment called Hammer's Slammers, after their leader, Colonel Alois Hammer. The series begun with the short story collection Hammer's Slammers (1979), with the latest installment a short story published in 2015. A tabletop wargame and a roleplaying game set in Hammerverse universe have also been published. Source: Wikipedia (en)