Volume 1 of an exhaustive two-volume study of Thailand’s Tamruat Trawen Chaidaen, or Border Patrol Police (BPP), provides a general history of the corps, its organization and deployment throughout Thailand, its personnel structure, and a discussion of the equipment it has on hand. To exemplify the kind of people who make up the BPP, the volume’s final chapter provides in-depth profiles of several individuals, from former commissioners to present-day noncommissioned officers. The author has based his study on years of personal research; he has visited every BPP base around the country, as well as every regional headquarters, at least once, observing a range of activities and talking with countless individuals.