CEF formation patches
These were the badges worn on sleeves and berets, painted on trucks and on signs identifying the units. They had to be readable at a distance and when found on a body lying in the mud in a trench, so they couldn't be too fussy. The Division patches of the Canadian Expeditionary Force followed a simple ordering system: the square colour block indicates the division, the brigade is the colour above it, the shape above it indicates the battalion.
All very tidy in the diagrams, what they looked like on the uniforms is somewhat more makeshift.