There is no Scheiss or similar spelling listed in 2nd EMM Co. B, and the name on Henry Wauge's card (indexed as Wange) looks like "Otheiss"

http://www.sos.mo.gov/TIF2PDFConsumer/DispPDF.aspx?fTiff=/archives/AdjutantGeneral/Civil_War/ServiceCards/s767/2132.tif&Fln=S324723.pdf

I believe this must have been Co. B's captain:

http://www.sos.mo.gov/TIF2PDFConsumer/DispPDF.aspx?fTiff=/archives/AdjutantGeneral/Civil_War/ServiceCards/s767/2082.tif&Fln=S310014.pdf

Otto "Theis" is listed in Carondelet Township of St Louis Co. 1860, but I don't find a likely candidate for Henry in that township: Are you certain Wauge is correct spelling, and do you know his age?