King of the Texas Rangers (1941) is a Republic film serial. Set in the years prior to America entering World War II, the plot is slightly anachronistic in that the serial features a mix of period western and modern elements, which was familiar in the B-Western films also produced by Republic. Although the serial's plot involves cowboys battling Axis agents in Texas, Nazis are never named as such, but their presence is strongly implied within the serial.

Plot

When Captain King of the Texas Rangers is murdered by saboteurs, his son, Tom ("Slingin' Sammy Baugh"), a famous football star, leaves college and joins the Texas Rangers himself. Shortly after, Tom is given the mission of avenging his father's death and defeating the foreign agents.