  We study the effects of spin-orbit interaction (SOI) on the current-induced
motion of a magnetic (Bloch) domain wall in ultrathin ferromagnetic nanowires.
The conspiracy of spin relaxation and SOI is shown to generate a novel strong
nonequilibrium Rashba field, which is dominant even for moderate SOI. This
field causes intricate spin precession and a transition from translatory to
oscillatory wall dynamics with increasing SOI. We show that current pulses of
different lengths can efficiently be used to control the domain wall motion.
