All I know is that he was in the Australian military, and I’ve always seen him for examples of ptsd. Did anyone ever find out who he was? Or is he another anonymous testament to the horrors of war?
Do you have any examples of him being described as "Shell-Shocked"? Very easily he could just be looking off into the distance.
As well, the usage of "PTSD" to describe people before the condition was described in the DSM is difficult say the least.
This is an excellent featured post about it I'd recommend on the subject: