Can anyone tell me what these military base codes mean?

Many years ago I was able to visit Pretoria to obtain my father’s SAAF World War II record when he served in the SA UDF. I recall him mentioning such places as Waterkloof, Saldanha Bay and Congella, Durban. He worked on aircraft maintenance, I believe. I have been researching his family history and feel it would not be complete without some knowledge of where he was based during the war.  

Would anyone from the community with knowledge of such matters be able to tell me the sequence of his movements from the following base codes entered on his ‘record of service’ (see image above).

I would be most grateful for any help I receive.  Thank you.

Glynis Long - glynislong@btopenworld.com