Wall displacements are induced by large current pulses crossing a wall, in Ni81Fe19films. In films of thicknessw<35 nm containing Ne´el walls, the sense of wall motion is found to be independent of the magnetization sense in the two domains adjacent to the wall, and is identical to the sense of motion of the electronlike charge carriers. This shows that the wall motion is not caused by stray magnetic fields, but rather bys‐dexchange forces generated by conduction electrons. The value &bartil;5×107A cm−2of the needed current density agrees with predictions of a theory based ons‐dexchange. In the case of cross‐tie walls in films with 35 nm <w<86 nm, the sense of wall motion does depend on the sense of the domain magnetizations. The force of the circumferential magnetic field of the current is probably important, here.