"Texas Rangers Frontier Bn Company A"
Wondered about the significance of the logo on the very cool flag in the opening credits. At first glance, I thought it read "Frontier Bn Company" and wondered what the heck that was. Then I caught the "A" after "Company" and figured out it read "Frontier Battalion Company A". Looking it up on Google, I found some interesting historical background that provides some context for the show:
http://www.texasescapes.com/JefferyRobenalt/Texas-Frontier-Battalion.htm
http://untpress.unt.edu/catalog/3511
https://untpress.unt.edu/catalog/3125
https://tshaonline.org/handbook/online/articles/qqf01
The last contains a mention of and a link for Sam Bass, whose character appeared in one of the TD episodes.