I realize I am very late in offering a comment on Professor Stur's article so I will be brief.
The basis for the "blood bath" argument was the massacre of approximately two thousand
South Vietnamese civilians carried out by the N.L.F during their occupation of Hue during
The Tet Offensive from February to March, 1968 .
On a personal note, I served in the U.S.Army (97th Field Artillery Battalion) and was called up to Saigon during the Offensive)
I did not believe there would be a "blood bath" when the war ended in April, 1975