21 March – John Bowser resigns as Premier of Victoria after his railway estimates bill is defeated in parliament. Harry Lawson forms a composite ministry of Liberal factions, including Bowser as Chief Secretary and Minister for Public Health.
25 April – Australian forces recapture Villers-Bretonneux from the German army helping to stop Operation Georgette.
31 May – John Monash takes command of the Australia Corps.
4 July – John Monash leads an attack on Hamel, regarded as one of the most prepared battles of the entire war.
8 August – The Battle of Amiens begins with British, Australian and Canadian troops participating in a successful offensive – General Erich Ludendorff described it as "the black day of the German Army".
12 August – King George V knights John Monash on the battlefield, the first British commander to be knighted in that way for 200 years.