Who is Michael DeTonq from Word of Honor and what is their importance?

Michael DeTonq was a member of Tyson's platoon and listed as missing in action. Tyson, however, believes that Michael may have deserted, and might even have made it out of Vietnam. It's Kelly who tells Tyson that DeTonq remained behind, posing as a Frenchman, and that good intelligence of this type is always in demand. This information is never confirmed.