The core premise follows two young British lance corporals, William Schofield (George MacKay) and Tom Blake (Dean-Charles Chapman), on a mission to deliver a message halting a doomed attack, emphasizing traditional themes of duty, sacrifice, brotherhood, and the brutal randomness of war with no overlay of identity politics, systemic critiques, or modern social justice framing. The film centers entirely on the soldiers' perilous journey through the trenches and no-man's-land, highlighting male camaraderie and the human cost of combat without injecting activist messaging or reframing the conflict through contemporary ideological lenses. Casting adheres closely to the 1917 Western Front setting, featuring an overwhelmingly white British male ensemble in lead and supporting roles including Mark Strong, Andrew Scott, Richard Madden, Colin Firth, and Benedict Cumberbatch, with no race- or gender-swapping of any established characters.

A single period-accurate inclusion of Sepoy Jondalar, a Sikh soldier, appears briefly and drew isolated criticism, yet it remains incidental to the narrative and does not shift the premise or introduce diversity quotas. Audience reception has focused on the technical achievement and emotional authenticity of the war story rather than any cultural controversies, confirming the absence of forced progressive elements.