What "wounded in Indochina"? Was he a medic in the French-Indochina War or something?
No, he was way too young for that.
"Between 1975 and 1979, after South Vietnam had fallen to North Vietnam, there was the emigration of millions of Cambodians to Thailand to avoid the Khmer Rouge. In response MSF set up its first refugee camp missions in Thailand.[6] When Vietnam withdrew from Cambodia in 1989, MSF started long-term relief missions to help survivors of the mass killings and reconstruct the country’s health care system.[9] Although its missions to Thailand to help victims of war in Southeast Asia could arguably be seen as its first war-time mission, MSF saw its first mission to a true war zone, including exposure to hostile fire, in 1976"
That's where this former Commie had tasted first blood.