The SNLS will spectroscopically observe ~1000 SNe, discovered using the Deep data from the CFHT Legacy, Survey. We obtain SN types and redshifts at Gemini,, Keck, and VLT. To date, about 300 spectroscopic, observations have been obtained in the redshift, range (0.15 < z < 1.0), and about 150 candidates, are confirmed as SNe Ia. While the major goal of, this program is to determine SN types and redshifts for, cosmology, we can also use this unique data set to test, the properties of SNe at high redshift. It is already, the best data set of UV SN Ia spectroscopy at any, redshift, allowing us to test the effects of metallicity, on the UV properties of SNe Ia. We will also probe, the effects of possible evolution with redshift, and, the rates of various subtypes of SNe Ia, allowing us, to constrain progenitor models. Furthermore, the spectra, of unique supernovae, when paired with their lightcurves,, will be used to learn more about the nature of all, types of SN explosions.