Werner Mölders celebrated a Roman Catholic wedding in 1941, and this was later used in propaganda after his death.
The British tried to exploit this ambiguity towards the regime and forged a letter from Colonel Mölders appearing to protest against the Nazi suppression of the Catholic Church.
The letter was dropped, in leaflet form, over the Catholic city of Münster in the hope of strengthening religious-based resistance to Hitler. The leaflet claimed that the colonel had been murdered by the SS who had staged his fatal air crash.
Also mentioned by Sefton Delmer:
Next I decided to fake a letter allegedly written by Mölders expatiating on the doubts he and his comrades felt about fighting for the atheist Hitler... For it was in keeping with the character of young Mölders to have written such a letter. He alone could have denounced it convincingly, and he was dead – murdered, so everyone believed, by the Nazis themselves.
http://www.heretical.com/walendy/sdelmer.html
---------
It seems this worked rather well. But does anyone have the exact wording of the letter somewhere?