- Albert Bruntnell of the National Party addresses the people of Orange in the lead up to the Federal election on 5 May
- Lieutenant Robert Alexander Little, an Australian pilot serving with the Royal Air Force engages a German DFW fighter, forcing it to land. He follows the aircraft down and captures the crew at gunpoint. With an official tally of 47 victories, Little is regarded as the most successful Australian flying ace.
- British troops on the Western Front advance to St Quentin Canal near Vendhuil and capture Bithem
- British and Indian forces in Mesopotamia capture Samarra; Turkish troops retreat from Shatt-el-Adhaim towards Jebel Hamrin
