G'day Goggy
Basically in a nutshell, I dont know.
What you are saying makes sense, but wouldnt they have just removed him from frontline duties and put him onto something else,(not familiar with how they did things back then)
Surely they wouldnt just discharge them but then again........
We dont know for sure if he wasnt already discharged when the photo (were they allowed to wear uniform when they had left/been discharged) was taken AND we dont know if it is a prosthesis, its all guesswork isnt it, at the end of the day
Jo