ANZAC is the acronym for Australian and New Zealand Army Corps and is usually written now as ‘Anzac’.
A national day of remembrance in Australia and New Zealand that broadly commemorates all Australians and New Zealanders "who served and died in all wars, conflicts, and peacekeeping operations" and "the contribution and suffering of all those who have served".
A red poppy is an international flower of remembrance.
Around the world, many wear it on Armistace/Remembrance Day, 11 November, but in New Zealand and Australia it is also often worn on Anzac Day.