Django displays many to many in the template - is the order ignored?

I am trying to display a list of objects (images) based on a many-to-many relationship (image / gallery using the Galleryimage model).

Galleryimage has an additional field called the position that I want to use to control the order in which images are displayed in the template.

I also have a page model, which, if necessary, can have a gallery attached to it.

My models look like this:

class Page(models.Model):
    gallery = models.ForeignKey(Gallery, blank=True, null=True)
    slug = models.SlugField()
    title = models.CharField(max_length=200)
    content = models.TextField()

    def __unicode__(self):
        return self.title

class Image(models.Model):
    title = models.CharField(max_length=50)
    image = models.ImageField(upload_to='images')

    def __unicode__(self):
        return self.title

class Gallery(models.Model):
    title = models.CharField(max_length=50)
    images = models.ManyToManyField(Image, through='Galleryimage')

    def __unicode__(self):
        return self.title

class Galleryimage(models.Model):
    image = models.ForeignKey(Image)
    gallery = models.ForeignKey(Gallery)
    position = models.IntegerField()

    class Meta:
        ordering = ['position']

I retrieve the page model in my view as follows:

def detail(request, page_id):
    p = get_object_or_404(Page, pk=page_id)
    return render_to_response('detail.html', {'page': p},
                          context_instance=RequestContext(request))

And finally, I show the images in the template like this:

{% block images %}
{% if page.gallery %}
{% for image in page.gallery.images.all %}
<a rel="gallery" href="{{ STATIC_URL }}{{ image.image }}"></a>
{% endfor %}
{% endif %}
{% endblock %} 

Images are all displayed as expected, the order always seems the same no matter what I do.

Can anyone give me a push in the right direction?

Any advice is appreciated.

Thank.