First of all the Wehrmacht was the armed force of Germany. They had ever a distance to the party. Also the Wehrmacht didn´t trust Hitler completely. And vice versa...
First the Wehrmacht, I mean Reichswehr, did not fight Hitler when he came to power. They were lead conservative and until 1938 not able or willing to see the danger in him. The Reichswehr was loyal to the government. And Hitler was appointed within the German laws. If Hitler made a Coup d´état again, the Reichswehr would have shot.
The Reichswehr was suspicious because of Hitler´s private army, the SA. That he tranferred power after the so called Röhm Putsch to the Wehrmacht was only a small point since some generals were murdered within this action. Nevertheless the Reichswehr stayed loyal to the government.
It is not a coincidence that the first attempts to assassinate Hitler came from the Wehrmacht, when several generals recognized the danger in him. Throughout the war they tried to assassinate Hitler and most of these attempts.
Indeed the Wehrmacht is responsible for starting a war. But to that time it was not against any German law nor against the international law (this was wrong at Nuremberg: IMO the people there could not be punished because of that, since only perhaps the Anloamericans knew this, not so the Russians, French, Germans or Japanese laws.). But wait. Was the Wehrmacht responsible? No, the government. They followed the orders. The German soldiers was said Germany was attacked and the generals wanted revenge for Versailles. So in their eyes to that time the war was in a way justified. They were not eager like before ww1 but more afraid. Nevertheless in the first weeks and month until the BoB nothing happened which let them think this was not justified. Later it began and quickly spread after attacking the SU.
The Wehrmach commited war crimes indeed. But most crimes were made by the SS. Lidice for instance. There were execusions of civilians made by the Wehrmacht but mostly these were made by the SS. Other war crimes in the heat of the fighting like shooting captured MG gunner, well the Allies did the very same. Killing captured Partisans is also not a real war crime. The inhumane killing of civilians or PoW for partisan activity was, until a certain extent (10-1) within international law in these times and perhaps still is. Although we all agree that this is wrong and has to be changed it can´t be a crime when it was allowed! The allies, also the US, threatened to do so when they captured German towns. If they did so I don´t know.
All in all there are some crimes commited by the Wehrmacht.
Nevertheless the Wehrmacht was never considered as criminal orgaisation. They were the armed forces of Germany. They did not fight for Hitler (mostly) but for Germany. Indeed many soldiers said they would first have to win the war and then cleaning Berling from this brown scum.
The Wehrmacht was in no way part of the organized Holocaust. This was commited by the SS. The only crime, Case, you want to say is, that they fought for Germany, while the (Austrian) government was committing the crimes, which were not public. They were fighting because of patriotism and not of any other things. They did not stop Hitler. (Although some soldiers tried it). But THAT also the other nations did. That they supported Hitler by fighting, well then also the German people are guilty or some foreigners who had businesses here. But as this can´t be a crime, then all Russians were guilty for Stalin or all US citizens for Hiroshima and Nagasaki.
Adler