After surviving the 1862 Battle of Corinth, Newton Knight (Matthew McConaughey) a poor farmer from Jones County served as a medic in the Confederate Army. He defies the Confederacy because he learns the troops are seizing crops and livestock for taxes. Serena Knight (Keri Russell) and Rachel Knight (Gugu Mbatha-Raw) both did a great job in their roles. A very riveting movie. What’s interesting while showing Rachel how to shoot, Newton Knight refers to the front sight as a “BB.” BB guns didn’t exist until 1900. When Newton Knight and his young cousin Daniel are sheltering in a rifle pit during a battle, a prominent Philip’s head screw can be seen holding the parapet of the rifle pit together. The Philip’s head screw wasn’t invented until the 1930s.