I presume he was originally charged with murder but was convicted of the lesser charge. I would like to know if he was in the US military while in Germany. Most countries don't take too kindly to foreigners murdering their citizens so I wonder if the victim was even German.
I have the details on Haulman's German crime. When he was 20, he bludgeoned and killed a man who was a casual acquaintance. He was apparently not even a suspect in the crime but was apprehended for some other unrelated reason and ended up confessing. He was charged with manslaughter. Under German law, people under 21 can be charged in juvenile court so prosecutors decided to do that in this case, which meant he faced much less prison time than he otherwise might have received. He was not in the military at the time of the murder, but was in fact living a transient life in the woods near U.S. Ramstein air force base. The man he killed was the son of an Air Force colonel. Haulman served six years at a reform school for the crime and was shown leniency in sentencing because of a diagnosis of schizophrenia.
All details from this article: Man convicted in 1999 killing of Ramstein colonel's son now a 'person of interest' in woman's disappearance
Some points of linkage:
1. Haulman is thought to have bludgeoned all of his victims. Going to a wooded area with them and building a campfire appear to be recurring themes in his crimes.
2. He tends to confess to crimes he's not even suspected of.
3. In addition to Pennsylvania, and his ties to Michigan, he has lived in California, Maryland, and Illinois.
I have no doubt this guy has other victims. JMO.