April 25 was officially named ANZAC Day in 1916. It marks the first day the Australian and New Zealand troops saw military action in Gallipoli during the First World War. Today, we commemorate the anniversary and remember all Australians who've served our country with a dawn service or ceremonies later in the day, followed by a round of two-up at the boozer. If you're not so keen on the schooner marathon, there's a plethora of things to do on April 25 to commemorate the day. Here’s our rundown of how to spend ANZAC Day in Sydney.