OK, now let's go into something that most people seem to know little to nothing about.
There were a great many "War Crime Trials" after WWII. But most only seem to know of the Nuremberg Trials.
Those trials were for the highest levels of Nazi leadership. And those were not "War Crime Trials", they were trials for "Crimes Against Humanity" for starting the war, then conducting the "Final Solution". You did not see "Corporals and Sergeants" there, because they were not responsible for starting the war.
The "Trials for Corporals and Sergeants", along with all other members of the military were the Dachau Trials. They went on between November 1945 and August 1948, and tried 1,672 German war criminals in 489 separate proceedings. During these trials, 1,416 former German soldiers and other security officials were convicted of war crimes. 297 were sentenced to death, 279 were given life sentences.
For example, of the 40 officials tried at Dachau for war crimes at the Dachau Concentration Camp, 36 were sentenced to death, and 23 were hanged over a 2 day period 5 months later. Ultimately 116 members of the Dachau Camp were convicted and sentenced.
Another of the high profile Dachau Trials were those responsible for the Malmedy Massacre during the battle of the Bulge. This is where over 80 American POWs were rounded up and summarily executed between December 1944 and January 1945. Of the 73 tried at Dachau, 43 were sentenced to death, 22 to life in prison, and 8 others to between 10 and 20 years in prison.
And there were many more trials for war criminals after WWII. The Auschwitz Trials, the Frankfurt Trials, and even the Majdanek Trials among many others. Ultimately tens of thousands (of the over 14 million) who served in the Wehrmacht were tried and convicted in the years after the war of War Crimes.
And I only listed those War Crime Trials against Germany. There were also the International Military Tribunal for the Far East (the Japanese version of Nuremberg), then the trials against lower leaders and soldiers. Like the Nanjing War Crimes Trial, the Manila Tribunal, the Yokohama War Crimes Trials, and the Khabarovsk War Crime Trials.