9th Division Engineers improvise a flamethrower.
This Sapper from the 9th Division's Royal Australian Engineers demonstrates a method of improvised flame throwing. In a used 44 Gallon drum he mixes a potion of 60% Benzol and 40% Petrol. Into the mix was thrown a handful of metal shavings.
When ignited by remote device this drum exploded with an immense curtain of liquid flame that would be devastating to exposed infantry. I particularly like the silhouette of the slouch hat in the explosion in the bottom photo.
images 020665 and 020666 Australian War Memorial.