Which fictional London detective created by J.K. Rowling is a former military investigator?

Cormoran Strike is the fictional London detective created by J.K. Rowling who is a former military investigator.

Strike is the central character of Rowling’s crime novels written under the name Robert Galbraith. He is a former Special Investigation Branch investigator in the Royal Military Police. After leaving military service, he works as a private detective in London.

The series begins with The Cuckoo’s Calling, in which Strike investigates the death of model Lula Landry. His professional and personal partnership with Robin Ellacott becomes a major continuing thread across the novels. The books combine traditional investigation with detailed contemporary London settings.

Strike is sometimes mistaken for the television series title, Strike, but Strike is the detective’s surname. The BBC adaptation uses that single-word title and stars Tom Burke as Strike. Rowling’s authorship was initially concealed by the Robert Galbraith pseudonym and was publicly revealed in 2013.