Nitrox, point well noted about tea but the photo about "tea/coffee in style" posted by Lancaster comes from a site called Feldgrau.info; I therefore suspect that if this photo refers to any Empire, then it should be the German one in Africa. And I am not sure that before WW1 German settlers or troops in Africa were avid tea-drinkers. But that's my thought only and only Lancaster may shed light on this tricky issue.

Louis