In 1914 Australia had only one military airfield called Central Flying School with 5 aircrafts at Victoria. These 5 aircraft flew to take part in the WW-I. This central flying school came to be known as the 'Royal Australian Air Force'. To commemorate 100th anniversary of WW-I, the Royal Australian Mint issued a 20 cent coin, Cu-Ni as part of the celebrations of 100 years of ANZAC issued in 2015.
