Have you found anything? My great great grandfather was Christian Arzt, born 1832 in Grosssachsenheim, Vailhingen District, Germany. He left the German army as a young man to come to the US. Eventually settled i Michigan.
I would like to share information with you. The name may have been changed to Artz in the second generation here, which makes it more difficult to trace.
I look forward to hearing from you.