Here is a photo of a group of Officer Cadets wearing the maple leaf in question. Typically a white band was worn on the field service cap, forage cap or Tam O'Shanter. As the beret did not have a cap band the maple leaf was placed on a white disk.
The same badge appears to be in wear by soldiers formed up in a composite platoon. In lieu of the white disk the badge is backed with a red/scarlet wool flash. Nothing is know of this composite platoon at this time
