I used to love ANZAC biscuits but they had wheat and gluten in so I don't touch them anymore. I was eating the Coles gluten free ANZAC bickies for a few years but they jacked the price up on them around Covid19 and they are too sweet now (way too much sugar in them).
Officially, ANZAC Day was and still is about WW1 but most people accept that it now covers anyone who served in wars and this is confirmed by the age of the veterans attending the memorials. They are anywhere from 100+ years old down to 20 years old and cover all the wars Australia has ever been involved in.