Danny, your little aside about Deolali Camp is at the root of all that is wonderful about this thread. The expression of going "Doolally" is familiar to us all. It's explanation was not, I suspect.
If you put that location into Google Maps you are whisked instantly to a part of India NE of Bombay, with pictures of local scenes there as well. The ones showing an aerial view of Barnes School look suspiciously like old Barrack Blocks surrounding a central padang (or whatever the Indian equivalent is). Could that be the place where our troops did indeed go Doolally, Danny?