Hi, your badges are South African Air Force, SAAF (though the last row of buttons appear to be RAF).
the Brevet (half wing) is RO = Radio Operator and M = Marconis (Afrikaans for radio operator) this was issued from 1961 to 1994 to aircrew trained as radio operators.
The epaulette is SAAF rank of Captain.
The eagle and SA also SAAF
I hope this helps.