Tommy Sandmann is actually named Thomas Senmann. He was the initial drummer in Destruction in 1983, then called Knight of Demon. The band was considered at the top of the class of mid-eighties German thrash metal, along with Kreator and Sodom.
Sandmann/Senmann and Destruction debuted with the EP "Sentence Of Death" in 1984. Two years later, in 1986, he was replaced by Oliver Kaiser.