  In ordinary QCD with light, degenerate, fundamental flavors, $CP$ symmetry is
spontaneously broken at $\theta=\pi$, and domain wall solutions connecting the
vacua can be constructed in chiral perturbation theory. In some cases the
breaking of $CP$ saturates an 't Hooft anomaly, and anomaly inflow requires
nontrivial massless excitations on the domain walls. Analogously, $CP$ can be
spontaneously broken in supersymmetric QCD with light flavors and small soft
breaking parameters. We study $CP$ breaking and domain walls in softly broken
SQCD with $N_f<N$ flavors. Relative to ordinary QCD, the supersymmetric case
contains an extra light field, the $\eta^\prime$, which has interesting effects
on the structure of the walls. Vanishing of the $CP$ anomaly is associated with
the existence of multiple domain wall trajectories through field space,
including walls which support no nontrivial massless excitations. In cases with
an anomaly such walls are forbidden, and their absence in the relevant SQCD
theories can be seen directly from the geometry of the low energy field space.
In the case $N_f=N-1$, multiple approximately-BPS walls connect the vacua.
Corrections to their tensions can be computed at leading order in the soft
breaking parameters, producing a phase diagram for the stable wall trajectory.
We also comment on domain walls in the similar case of QCD with an adjoint and
fundamental flavors, and on the impact of adding an axion in this theory.
