I don't remember "Sixteen Men," but I recall a short series about the Arizona Rangers called "Twenty-six Men."

This is the story of twenty-six men, who rode the Arizona territory. Praised be the glory of twenty-six men, whose courage helped to build the territory. Twenty-six men, who saddled up and then rode out to answer duty's call. Twenty-six men, who lived to ride again and fight for the right and the liberty of all. Saddle up, saddle up, saddle up.