It stars Jack Lowden and Peter Capaldi as the war poet Siegfried Sassoon, along with Simon Russell Beale, Jeremy Irvine, Kate Phillips, Gemma Jones, and Ben Daniels.

The film follows the life of Siegfried Sassoon, a British poet and decorated World War I combat veteran who was sent to a psychiatric facility for his anti-war stance.

The site's consensus reads, "It isn't an easy watch, but Benediction uncovers a profoundly affecting drama in the real-life story of a combat veteran whose poetry warned against the horrors of war.

"[19] Metacritic, which uses a weighted average, assigned the film a score of 81 out of 100 based on 32 critic reviews, indicating "universal acclaim".

[21] In response to the film's portrayal of Sassoon's conversion to Catholicism, the poet's niece, Sister Jessica Gatty (who attributes her own conversion to Sassoon's influence), repudiated the filmmakers by revealing that he had been both at peace and joyful in his later years, stating: "The redemption which he sought in many different ways and which he longed for, was found in the last decade of his life when he came home to Christ in the Catholic Church.