I’ve changed the header for this site; the original was cropped from a famous Frank Hurley image – perhaps the most famous Frank Hurley image – showing Australian infantry moving up to the front near Hooge in October 1917:
I’ve written about Hurley before, and it turns out that this may be one of his many manipulated images: see Bob Meade‘s detective work here (though see the cautionary notes in the comments too).
While I was doing some image research for my presentation at the Association of American Geographers in Tampa, I discovered the parallel, contemporary image I’ve substituted. Here is the uncropped image, taken by Mark Doran, which shows soldiers from the 7th Battalion Royal Australian Regiment at sunset at Tarin Kot (Uruzgan, Afghanistan) in 2013:
geographical imaginations 
I’ve been running an archaeological project in Belgium in an area where Anzac 3rd Division fought and whom Hurley photographed. In 2007 our site photographer Ian Cartwright brought out a box camera the same as Hurley’s and created several images, including replicating one of Hurley’s pictures, with the dig team standing in for Australian soldiers.
Ian’s images can be seen here:
http://plugstreet.blogspot.co.uk/2007/10/ians-images.html