military anniversaries
January
1 January – Commonwealth of Australia proclaimed (1901)
11 January – Official cessation of hostilities in Vietnam by Australian forces (1973)
31 January – Tet offensive commences, Vietnam (1968)
February
10 February – HMAS Melbourne/HMAS Voyager Collision (1964)
14 February– National Service Day
15 February – Fall of Singapore (1942)
16 February – Radji Beach Massacre, Dutch East Indies (1942)
19 February – Bombing of Darwin (1942)
24 February – War Animal Day
March
1 March – Formation of Australian Army (1901)
1 March – Formation of Australian Navy (1901)
19 March – Iraq War commenced (2003)
31 March – Formation of Royal Australian Air Force (1921)
April
2 April – RAN Sea King crash, Nias Island Indonesia (2005)
10 April – Siege of Tobruk commences, North Africa (1941)
22 April – Battle of Kapyong commences, Korea (1951)
25 April – Gallipoli Landing, Turkey (1915). Anzac Day
May
4 May – Battle of the Coral Sea commences (1942)
8 May – Victory in Europe (1945)
14 May – Hospital Ship Centaur sunk (1943)
29 May – International Day of UN peacekeepers
31 May – Japanese submarines attack Sydney Harbour (1942)
31May – Boer War ends (1902)
June
6 June – D Day, Liberation of Europe commences (1944)
10 June – Battle of Shah Wali Kot commences, Afghanistan (2010)
12 June – Black Hawk helicopter tragedy (1996)
JuLy
1 July– Reserve Forces Day
24 July– Arrival of RAMSI forces in the Solomon Islands (2003)
27 July– Korean Veterans’ Day
August
5 August – Cowra Breakout by Japanese prisoners of war (1944)
15 August – Victory in the Pacific (1945)
18 August – Vietnam Veterans’ Day
31 August – Malaya & Borneo Veterans’ Day
September
2 September– Battle for Australia Day
3 September – Merchant Navy Day
14 September – Australian Peacekeepers Day
20 September – Arrival of INTERFET in East Timor (1999)
October
3 October – Vietnam Forces Welcome Home Parade, Sydney (1987)
31 October – Charge of Beersheba (1917)
November
1 November – AIF first convoy sails from Albany (1914)
10 November – Selective conscription introduced (1964)
11 November – Great War Armistice signed (1918).
11 November - Remembrance Day
11 November – Australian War Memorial opened, Canberra (1941)
December
31 December – Conclusion of Operation SLIPPER, Afghanistan (2014)