Wikipedia claims that the US military executed 160 service members for capital offenses between 1942-1948. How many contractors or military personnel are currently serving prison sentences for crimes committed in Iraq or Afghanistan? A handful? Now, one can either conclude that WWII era service personnel were not as disciplined, professional, and well trained as today's personnel, OR - one can conclude that we simply close our eyes to these happenings, and/or have grown much more tolerant of extra-judicial killings. Each can reach their own conclusion.