This is another photo of my Great Uncle posing among some stockpiled artillery, most likely taken the same time as the first photo in the thread. My guess is that this was at war's end and the equipment was being stored somewhere, possibly in Cairo or nearby.
The back of this photo is inscribed 'Australian Mountain Battery'.
Had a bit of a Google but only found the usual Howitzers etc.. Hopefully someone might recognize them.
This looks similar.
The second image may be QF 1 pounder Pom Pom AA Guns. Mounts vary on these.
The third image may be QF 13 pounder 9 CWT AA guns.
Willie I believe that Dave is on the money re the Anti Aircraft guns in the previous images. The wiki address (Category:World War I anti-aircraft guns - Wikipedia, the free encyclopedia) has some good links to various types as a quick reference. Given the "Lorry" census or rego number on the back of the AA gun it is most likely a Peerless AA Lorry based on the partial image of the wooden spoked rear wheel. The single image is again an AA Lorry, either a Peerless or a Thornycroft. Your traveling "forge" in the later image is in fact a mobile kitchen or part thereof. Again great pics and thanks for posting. Rod
Jerico Jane was a 15cm Kanone M16 built by Krupp - there were two, the other was called "Nimrin Nellie" by Allied troops. There's a surviving 15cm Krupp gun in the Carribean Gardens, Scoresby, Vic.
The field gun is a 7.5cm Krupp M03?, the Ottoman Army had several hundred of these, the majority were the M1903 model. There are about 30 or so in Australia.
The howitzer a few posts back is a 15cm schwere Feldhaubitze M13 - standard German heavy howitzer - the Germans supplied the Ottomans with 50 or so of these guns in 1915/16.
This is an interesting one of a Holt 75. The hand written inscription on the reverse reads 'Desert Train'.
In the right background of the photo is a bunch of camels going by. In the left background is a group, a bit hard to tell if it's mounted troops or more camels. The bloke in the foreground, lying in the sand and reading the book or paper, appears to have some furry animal perched on his left shoulder. The trailers have some markings, a broad arrow and '1203' on the front and a square insignia on the sides. The Holt appears to have '1204' on the front, and a '3' on the toolbox and the tank in front of it.