Chris,
Thank you for posting this detail of history.
Many of us here are in touch with veterans and maybe others, as I will, will ask about that when talking with them.
Have you thought about reaching out through the Legion Magazine which is a function of the Canadian Legion
https://legion.ca/join-us?gclid=EAIa...SAAEgI8r_D_BwE
and asking them to publicise it?
For me Longmoor was a place I know from my military training exercises