I would say that the law is very well known by the more educated activist women who live in the major cities, and very less well known by the women who it is supposed to help the most, the women who live in the rural areas without access to justice.
In terms of the police and the military, I can't speak specifically to the police in Afghanistan. I have done this in other similar countries, where in my experience the police tend to do what they think is best for the family. A lot of times that's sending the woman back home. I can't imagine it's a whole lot different in Afghanistan than in some of the other places I've worked.
Generally speaking, the law is seen as not really well enforced by anyone. If you were to do a survey outside the major population centres, I would guess that for most women it has had absolutely no impact on their life. A lot of times, in my experience, the women I've worked with, when I hear stories about people addressing domestic violence.... I just heard a story the other day that a woman was walking by a house and heard the woman crying and went in and talked to the husband and got some elders involved, and he agreed to stop beating her. That's how domestic violence, frankly, is being addressed right now, on that kind of personal level, but not at the legal or national level.