ANZAC Day commemorates Australian and New Zealand soldiers who fought in World War I. The ANZAC ceremonies are held at dawn to mark the time of the first major military action that involved Australian and New Zealand forces during World War I at Gallipoli in Turkey on April 25, 1915. Important figures remembered on this day include Jack Simpson who helped save many wounded soldiers, and Charles Hazlitt Upham, a soldier from Christchurch, New Zealand who fought in World War II. Poppies became a symbol of remembrance because of the fields of poppies that grew where soldiers fell in battle.