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 and on the photo right is William G. Hart, but the identity of the others is a mystery.
Can you help identify any of the above?  All suggestions or clues are welcome