Here's a few photos, firstly Le Hamel and the direction of the Australian attack from Corbie (the church with the twin towers, to the right of Le Hamel church, is in Corbie).
Here's a picture of the Somme valley, along which von Richthofen flew on his final flight. The crash site of his plane is near the brickworks chimney on the skyline in the photo.
The Australian Corps memorial:
And the remains of trenches near the memorial; the 8th August 1918 attack started from here.