Scanned from an 8x10 photograph dated 25 Dec 1918
A group of soldiers mounted on camels posing in front of the Sphinx and Pyramids
From the cap and collar badges the majority appear to be Canadian though I don't know of any Canadian units in Egypt at this time. Possibly troops returning from India at the end of WW1 via the Suez Canal
Photo by George M Georgoulas who had a studio in Cairo from 1915-1937