  We propose a new mechanism for the generation of primordial magnetic fields,
making use of the magnetic fields which are induced by anomalous global strings
which couple to electromagnetism via Wess-Zumino type interactions. This
mechanism can be realized in QCD by utilizing pion strings, global vortices
which appear in the linear sigma model which describes physics below the QCD
confinement scale. During the chiral symmetry breaking phase transition, pion
strings can be produced, thus leading to primordial magnetic fields. We
calculate the magnitude and coherence length of these fields. They are seen to
depend on the string dynamics. With optimistic assumptions, both the magnitude
and coherence scale of the induced magnetic fields can be large enough to
explain the seed magnetic fields of greater than $10^{-23}$ Gauss necessary to
produce the observed galactic magnetic fields via the galactic dynamo
mechanism.
