The Dark Energy Survey Supernova Program (DES-SN) is a five year, 27 square
degree cadenced search for type Ia supernovae (SNe Ia) using the Dark Energy
Camera on the 4m Blanco Telescope. DES-SN will accurately measure and
photometrically-classify more than 3000 SNe Ia in griz over a redshift range of
0.1 LT z LT 1.2, deriving from this sample the most precise constraints for
cosmological parameters of any supernova survey prior to LSST. I will present
the results of the spectroscopic followup program from the first three years of
DES-SN, including classifications, spectroscopic efficiencies, biases, and
example spectra and light curves illustrating the data quality of the program. I
will show how these objects compare with the photometric sample, and present
the first spectroscopic Hubble Diagram from DES-SN, consisting of >200 SN Ia
out to redshift z=0.85.