When Chona and Ransome are watching the foiled hanging from her balcony, Ransome puts his right around around her waist, in the next shot, his arm is at his side.
Although Randolph Scott portrayed Ransome Callicut, Patrice Wymore referred to him numerous times as "Rick".
However, at the beginning of the movie, Randolph Scott is undercover as Rick Bryce.
The film is set in 1850s. Most, if not all, of the firearms employed in the film post-date the American Civil War (1861-1865). Examples include Colt Single-Action Army revolvers and various lever-action rifles that first appear in the 1870s.
Early in the movie when Major Callicut empties Sutro's pistol, he shows a handful of brass cartridges which were not produced until after the Civil War. Pistols of the time used gunpowder and percussion caps.
In a pre-Civil War western the cavalry are wearing uniforms issued to Federal troops in the Civil War.