On the 9th of November, 1945, in the Philippines, Dan J. Lee was executed by firing squad, convicted of murder and/or rape. He was buried in Clark Veterans cemetery, in a grave with only his name and date of death, and it is not clear of the exact details of his case, or even of his identity, and it has certainly not attracted scholarly attention. He was a US soldier, the last to be executed by firing squad under American military, and can now be found in a small plot tucked away in the upper centre the field, in a row of other executed service members, the vast majority of whom were hanged. He had been sentenced to death on the 18th of July 1945.
There are four candidates that I can find that have online records and who cannot be excluded on the basis of survival of the war, death during the war or theatre of war. I'm hesitant to post their names or details as some may still be alive, or have close relatives and descendants alive. They are variously born between 1887-1922, had either dropped out of high school early or attended a grammar school, three were farmhands, all came from the South or Midwest.