The primary villains are Hessian troops and their leader. However, Hessian soldiers were not deployed in North America until the American Revolution, at least ten or more years after the events of this movie.
The Hessian soldiers fire smooth-bore, muzzle-loading muskets numerous times without reloading them.
Many of the Indians are shown wearing the kind of long, flowing, feathered headdress of the type seen on Plains Indians--Sioux, Arapaho, Cheyenne--in the late 1800s. This film is set in a different era (1700s) and different area (the Midwest in the area of where Detroit, MI, is now) and Indians of those tribes and in that era did not wear those kinds of headdresses.
Footage from at least one silent-era western is used during a scene showing Indians attacking a settlement. The area shown in the footage, the flat and semi-arid desert of the American Southwest, does not match the hilly, heavily forested area in which this film was shot.