Factual error: Scarlett is seen walking on the main street on the way to the hospital. You can clearly see a light bulb in one of the street lights. (01:05:25)
Factual error: The film is set during the late 1880's in India. The rifles/bayonets carried by all the British soldiers and Thuggee Indians are American 1890's Krag-Jorgensen rifles. Presumably done for ease of supplying American ammunition compared to British .303 ammunition.
Factual error: Towards the beginning of the film, when Kitchener is shown inspecting Harry's old regiment, one of the African or Egyptian troops is shown to be wearing the Pattern 1914 Infantry Equipment, not made until 1914 at the earliest. Additionally, it has the 1918 modification to have two closing straps, so is over 20 years too late for the 1894 date at that point.