the precise form of their murder at the hands of the damnyankees is officially listed as "unknown", like that of so many other POWs that died at PLPOWC.
BTW, i heard a professor at a recent civil War roundtable here in DC say that "more than twice as many POWs died at Point Lookout from the effects of intentional mistreatment than died from all causes at Andersonville."
free dixie,sw