A feature film version of The Wars was released in 1983. The film was directed by Robin Phillips from a screenplay written by Findley, and starred Brent Carver as Robert Ross. It received three Genie Awards from the Academy of Canadian Cinema and Television in 1984, in the categories of Best Achievement in Sound Editing (Sharon Lackie, Bruce Nyznik, and Bernard Bordeleau), Best Performance by an Actress in a Leading Role (Martha Henry), and Best Performance by an Actress in a Supporting Role (Jackie Burroughs), and was nominated for four more in the categories of Best Picture, Best Achievement in Film Editing (Tony Lower), Best Achievement in Overall Sound (Hans Peter Strobl), and Best Screenplay (Findley).
The novel has also been adapted for the stage by Dennis Garnhum. It premiered at Theatre Calgary in September 2007.