- Directors: John Ford
- Producers: Merian C Cooper, Lowell J Farrell, John Ford
- Writers: James Warner Bellah, Frank S Nugent, Laurence Stallings
- Genres: Western
- Actors: John Wayne, Joanne Dru, John Agar, Victor McLaglen, Ben Johnson, Harry Carey Jr
On the verge of his retirement at Fort Starke, a one-troop cavalry post, the aging US Cavalry Capt. Nathan Cutting Brittles (John Wayne) is given one last patrol, to take his troop and deal with a breakout from the reservation by the Cheyenne and Arapaho following the defeat of George Armstrong Custer. His task is complicated by being forced at the same time to deliver his commanding officer’s wife and niece, Abby Allshard (Mildred Natwick) and Olivia Dandridge (Joanne Dru)), to an east-bound stage, and by the need to avoid a new Indian war. His troop officers, 1st Lt. Cohill (John Agar) and 2nd Lt. Pennell (Harry Carey, Jr.) meanwhile vie for the affections of Miss Dandridge while uneasily anticipating the retirement of their captain and mentor. Rounding out the cast are Capt. Brittles’ chief scout, Sgt. Tyree (Ben Johnson), a one-time Confederate cavalry officer; his First Sergeant, Quincannon (Victor McLaglen); and Major Allshard (George O’Brien), long-time friend and C.O.
After apparently failing in both missions, Capt. Brittles returns with the troop to Fort Starke to retire. His lieutenants continue the mission in the field, joined by Capt. Brittles after “quitting the post and the Army”. Unwilling to see more lives needlessly taken, Capt. Brittles takes it upon himself to try to make peace with Chief Pony That Walks (Chief John Big Tree). When that too fails, he devises a risky stratagem to avoid a bloody war.