Deutsches Afrikakorps (DAK) soldiers on the open rear gate of a truck. One has received a field main package from home. The contents are eagerly inspected - cigarettes, a piece of ham and a sausage. Behind the side one can see two drinking water canisters. Gasoline and water canisters had the same appearance, and so in order to prevent accidental mix-ups, a white cross was painted on both sides of the water canisters.
Book "Afrikakorps: Rommel’s Tropical Army in Original Color" by Bernd Peitz and Gary Wilkins