Charles G. Boyd
... that General Charles G. Boyd, United States Air Force, is the only Vietnam War prisoner of war to later reach the 4-star rank?
... that <a href="./General_(United_States)" id="mwAkw" rel="mw:WikiLink" title="General (United States)">General</a> <b id="mwAk0"><a href="./Charles_G._Boyd" id="mwAk4" rel="mw:WikiLink" title="Charles G. Boyd">Charles G. Boyd</a></b>, <a href="./United_States_Air_Force" id="mwAk8" rel="mw:WikiLink" title="United States Air Force">United States Air Force</a>, is the only <a href="./Vietnam_War" id="mwAlA" rel="mw:WikiLink" title="Vietnam War">Vietnam War</a> <a href="./Prisoner_of_war" id="mwAlE" rel="mw:WikiLink" title="Prisoner of war">prisoner of war</a> to later reach the <a class="mw-redirect" href="./4-star_rank" id="mwAlI" rel="mw:WikiLink" title="4-star rank">4-star rank</a>?