War crimes trials: After the war, the Allies established a number of war crimes tribunals to try German soldiers and other individuals accused of war crimes. These tribunals included the International Military Tribunal (IMT) in Nuremberg, which tried the top Nazi leaders, as well as a number of other tribunals that tried lower-ranking soldiers and officials. Those convicted of war crimes could be sentenced to death, imprisonment, or other punishments.
Denazification: After the war, the Allies also carried out a denazification process in Germany, which involved the removal of Nazis and their supporters from positions of power and influence. This process also included the prosecution and punishment of Nazi war criminals.
Extrajudicial killings: In some cases, German soldiers who were accused of war crimes were killed by Allied soldiers or civilians without a formal trial. These extrajudicial killings were often carried out in retaliation for the atrocities committed by the German soldiers.
It is important to note that not all German soldiers who committed war crimes were punished after the war. Some managed to escape justice or were never caught. However, the punishments that were imposed helped to deter future war crimes and to hold those responsible accountable for their actions.