Service Record Help

Can someone explain the following entry from an Australian pilots Service Record.
To - B.P.C.
Duty - N/E/S

Thanks
Andy

N/E/S is Non Effective Sick

Eddie

Base Personnel Centre, which I understand was also referred to as BPD (D for Depot) at times.

Cheers
Steve

Just a small point, but N/E/S (or N.E.S.) usually meant "Non-effective strength", although "Sickness" or "Injury" or some other distinction often appeared after these initials. Usually "N.E.S." personnel were held on Station rather than Unit (as Squadron or School) strength, although they could physically be in Station Sick Quarters (SSQ), a nearby civilian hospital, or even on sick leave (at home perhaps!).
David D