Literalmente te pone esto: "All of the models in an assaulting unit make their
assault move following the same rules as in the
Movement phase, with the exception that they may be
moved within 1" of enemy models. This means that
assaulting models may still not move through friendly
or enemy models, may not pass through gaps narrower
than their base, and may not move into base contact
with enemy models from a unit they are not assaulting."
Lo unico que te dice es que no puedes entrar en contacto con miniaturas que no estes asaltando. Pero pone que puedes Moverlas (o eso es lo que entiendo yo)
a menos de 1"