The Day Will Dawn

The Day Will Dawn, released in the US as The Avengers, is a 1942 British war film set in Norway during World War II. It stars Ralph Richardson, Deborah Kerr, Hugh Williams and Griffith Jones, and was directed by Harold French from a script written by Anatole de Grunwald, Patrick Kirwan and Terence Rattigan, based on a story by Frank Owen. The music by Richard Addinsell was performed by the London Symphony Orchestra conducted by Muir Mathieson.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.