▁Deput y ▁Commander ▁of ▁I ▁Corps , ▁Minister ▁of ▁Anti - Cor ruption ▁under ▁Vice - Pres ident ▁Tr ầ n ▁V ă n ▁H ư ơ ng , ▁Deput y ▁Commander ▁of ▁III ▁Corps , ▁Commander ▁of ▁For ward ▁H Q ▁III ▁Corps , ▁and ▁M G ▁Deput y ▁Commander ▁of ▁III ▁Corps . ▁He ▁was ▁found ▁dead ▁on ▁ 8 ▁April ▁ 1 9 7 5 ▁at ▁III ▁Corps ▁Head quarters , ▁Bi ên ▁H ò a , ▁and ▁theories ▁that ▁he ▁had ▁been ▁assass in ated ▁emer ged . ▁Two ▁days ▁later , ▁he ▁was ▁post hum ously ▁promoted ▁to ▁lieutenant ▁general . ▁ ▁Military ▁operations ▁ ▁Qu y ế t ▁Th ắ ng ▁ 2 0 2 ▁( Đ <0xE1> <0xBB> <0x97> ▁X á ), ▁ 1 9 6 4 ▁ ▁Hi ế u , ▁II ▁Corps ▁Chief ▁of ▁Staff , ▁designed ▁and ▁executed ▁Operation ▁Qu y ế t ▁Th ắ ng ▁( S ure ▁Win ) ▁ 2 0 2 ▁aim ing ▁directly ▁at ▁the ▁V iet ▁Cong ▁( VC ) ▁strong hold ▁at ▁ Đ <0xE1> <0xBB> <0x97> ▁X á ▁( ), ▁deep ▁in ▁the ▁Ann am ite ▁Mountains , ▁at ▁the ▁j unction ▁of ▁Kon ▁T um , ▁Qu ả ng ▁Ng ã i ▁and ▁Qu ả ng ▁T in ▁provinces , ▁from ▁ 2 7 ▁April ▁to ▁ 2 7 ▁May ▁ 1 9 6 4 . ▁Units ▁of ▁ 5 0 th ▁Regiment , ▁ 2 5 th ▁Division ▁participated ▁under ▁the ▁command ▁of