It's not really specifically written in the syllabus is it? The only key feature where I see Australia mentioned is
the commitment of US and Australian ground troops and the social, economic,
political and military impact of their involvement for Indochina
That's the only dot point which specifically asks about Australia. I don't think they could ask you a question on it frankly, but it might not hurt if you could incorporate some info about Australian commitment in to your response.