“By his steadfast determination, devotion to duty, and adherence to the Code of Conduct, Lieutenant Colonel Chapman knowingly brought harsher treatment upon himself,” the citation continues. “Disregarding his own personal safety and well-being in order to remain loyal to the United States and to set an example for his fellow prisoners, he illustrated a high degree of professionalism under the most adverse of conditions https://www.msn.com/en-us/news/us/the-marine-who-was-held-longest-as-a-vietnam-pow-has-passed-away/ar-BB1mbkkC?ocid=msedgdhp&pc=U531&cvid=ac4cebfb9d914c6ea711733dd93d5485&ei=13