Acanthos - Heraldry and Heritage

I've had a difficult time finding much, but I have gotten some progress.

Ground work Assignment 1.

Father, born in Australia ~ served other rank Royal Australian Navy, and commission Royal Australian Air Force.

Paternal Grand Father, born in Australia ~ served 2/4th Field Regiment, other rank. North Africa, Syria–Lebanon, PNG and Borneo. Then news agency.
Paternal Grand Mother, born in Pakistan.

Maternal Paternal Great Grand Father, born in England.
Maternal Paternal Great Grand Mother, born in England ~ an opera singer living and working in India, before marrying in India and later moving to Australia,, see a postcard found online of her below, circa 1910 India;



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Ground work Assignment 2.

Mother, born in Australia.

Maternal Grand Father, born in Australia ~ served 2/6th Infantry Battalion, other rank. Libya, Greece, Crete, Ceylon and PNG. Then photography.
Maternal Grand Mother, born in Australia to dairy farmers.