Defence Force fought for their countries. Many people are wounded and killed in the times of war. “Defend” means “to keep safe” and the people in the Australian Defence Force keep our country safe and protect us. On ANZAC Day we show our thanks to the people who have fought for our country. It is such a special day it has been made a holiday so families can go to the march in their towns. We can wear ANZAC badge and wave Australian flags to show how proud we are. Sunday, April 5, 2009. The answer is below.