Mary Lee Stubbs (Chief of the Organizational History Branch of the O.S. Office of the Chief of Military History) and Stanley Russell Connor (Deputy Chief of the U.S. Organizational History Branch, OCMH) wrote the 1968 Armor-Cavalry Part I: Regular Army and Army Reserve, part of the Army Lineage Series, which was "designed to foster the esprit de corps of United States Army units."

This occasional paper is a concise overview of the history of the US Army's involvement along the Mexican border and offers a fundamental understanding of problems associated with such a mission. Furthermore, it demonstrates how the historic themes addressed disapproving public reaction, Mexican governmental instability, and insufficient US military personnel to effectively secure the expansive boundary are still prevalent today.