Obviously the Wehrmacht committed all kinds of atrocities in the East: helping to implement the Holocaust and the genocide of the Slavs (the Hunger PLan, General Plan Ost). However, is it true that they more or less abided the Geneva Conventions and the norms of war in the West? Perhaps this is the source of the clean hands myth? Or is this another lie? I heard something to this effect in a documentary about Rommel and the Afrikakorps.
As for Rommel specifically: more can be written on this, but you might want to read "Rommel's legacy" by /u/commiespaceinvader.
EDIT: As for the source of the Wehrmacht Clean Hands myth, I suggest the reply to "Did the Rommel Myth and Clean Wehrmacht myth (and others) pushed after World War II come from Government level or Academia?" also by commiespaceinvader, with a bibliography at the end. Replies by /u/kieslowskifan and /u/]Georgy_K_Zhukov list books for further reading.
EDIT 2: I am sorry for not looking further down in previous postings before writing this. A few examples of Wehrmacht war crimes in the west (scattered in more about the east) is in "Just how much of the Wehrmacht was dirty?" , again by commiespaceinvader.
This is not to discourage discussion. Further questions, data, and debate are welcome.