  The AF-supergiants in the Galaxy and the SMC allow us to examine predictions
from evolution models through their CNO abundances. In these proceedings, we
recalculate the NLTE nitrogen abundances in 22 Galactic and 9 SMC A-supergiants
using improved atomic data and model atmospheres to compare with new evolution
models. The new abundances are higher than previously published values, and
suggest that most of these stars have undergone substantial mixing with
CN-cycled gas. While there is no clear relationship with mass, there is an
apparent relation with metallicity since the SMC stars (including B-stars) have
larger nitrogen enrichments. We suggest that rotational mixing is indicated
from the main-sequence throughout the supergiant range, with more substantial
rotational mixing in the SMC stars. In addition, the SMC AF-supergiants appear
to have undergone the first dredge-up during a previous red giant phase, and
possibly the Galactic AF-supergiants have as well. All abundances are compared
to the new solar abundances from M. Asplund (this conference).
