I hate to break this to you but the term ANZAC actually doesn’t apply to WWII era Australia and New Zealand. It goes for the term in WWI, however to somewhat contradict this statement; there was an ANZAC corp giving by the UK to a combine unit in Greece. So it did exist in small numbers but as far as the strategic use of it, Australia and New Zealand never combined their arms into one military in WWII. With that said, I don’t think you can find an ANZAC roundel for WWII as I am guessing each nation would use whatever their roundel would be.