"Tent Group outside waggons at Oasis".
"Tent pitching Showing Heliopolis. Col Hardie, Capt Johnson, Cpl Reid, Pvte Inglis & myself."
"Myself" is Gordon Williams, whose regimental number was 3355. Pte Inglis was No 3410 Thomas Inglis, a station hand from Orange, NSW. You won't recognise him from the back view, but perhaps he is in one of the other photos in this post.