Hi,
Your Father in laws remarks may not be the exaggeration you now have come to believe.
Please for your further interest and research go to 'qaranc 'site and in the left hand column click on "qaimns for India" there are several Nurses Stories of how the Hospitals in India Worked,attached to the nurses were also the RAMC ,and casualties had to be recovered from other areas such as Burma after the Japanese had invaded and brought to these hospitals in India for treatment.
I am ex RAMC,good luck and good hunting