Photos of unidentified 21st Battalion Men

Can you identify any of the men in the photos below?
If so, please contact the webmaster


Notice the C/21 Collar Dogs


An Officer with one Wound Stripe


This photo was most likely taken at a reunion and has signatures for more than are in the photo.  Seated in the centre is Bill Michaud, but the identity of the others is a mystery.
Can you help identify any of the above?  All suggestions or clues are welcome