A flag is flown at half-mast to indicate a death.
You fly a half-mast flag by quickly raising it into the air and then slowly dropping it half way, tie it off, and you are done!
Because either someone important has died or a solider has died that was over seas
The flag must first be hoisted to the top of the mast momentarily, and then it is lowered to the half mast position and secured.
The flags are flown at half mast to commemorate both the soldiers who fought for ANZAC (Australian and New Zealand Army Corps) at Gallipoli in Turkey in World War I, and all who served military duty...