Use of Weapons (16 Hours) is a science fiction novel by Scottish writer Iain M. Banks, first published in 1990 as the third Culture novel. The narrative takes the form of a fractured biography of a man called Cheradenine Zakalwe, who was born outside of the Culture but was recruited into it by Special Circumstances agent Diziet Sma to work as an operative intervening in less advanced civilizations. The novel recounts several of these interventions and Zakalwe's attempts to come to terms with his own past.
