1939 — First official RAAF operation of the Second World War when No 10 Squadron flew with RAF Coastal Command against U-Boats in the Atlantic.

1940 — MV Nimbin sank with the loss of 7 lives after hitting a German mine off Norah Head, New South Wales. She was the first Australian registered merchant ship to be lost during the Second World War.

1941 — Flight Lieutenant Clive Caldwell shot down five Ju-87 Stuka dive bombers in a single action. For this feat he was awarded a Bar to his Distinguished Flying Cross. 

1951 — 3 RAR is awarded the US Presidential Citation for its action in the Battle of Kapyong during the Korean War.

1990 — Approval is given by the Australian Government for the RAN's involvement in the Persian Gulf. Ultimately eight Australian warships served in the Gulf.

1914 — The First AIF disembarked in Egypt. The entry of the Ottoman Empire into the Great War dictated that the first Australian troops would to be sent to Egypt to protect the vital Suez Canal.

1918 — HMAS Swan enters the Sea of Azov to support White Russian forces against the Bolsheviks in the Russian Civil War.

1968 — Battle of Hat Dich, South Vietnam, involving the 1st Armoured and 3rd Cavalry Regiments, and 1 RAR.

1914 — Australian aircraft and their crews left to form the 'Mesopotamian Half Flight', fighting in Mesopotamia. 

1940 — The 8th Division of the 2nd AIF embarked from Sydney to Malaya and Singapore.

1943 — Battle of Nongoro, Papua New Guinea.

1942— HMAS Armidale was sunk by Japanese aircraft near Timor. As the Armidale sank Able Seaman Teddy Sheean fired at attacking aircraft until he was lost with his ship. In 2021, Sheean was posthumously awarded the Victoria Cross for his actions.

1943— Australian Army Medical Woman’s Service (AAMWS) was formed from Voluntary Aid Detachments.

1951— The largest air-to-air battle fought by the RAAF during the Korean war, with twelve Meteors of No 77 Squadron against 40 to 50 Chinese MiG-15s. 

1940— HMAS 𝘈𝘳𝘶𝘯𝘵𝘢 was officially launched at Cockatoo Island. She was the first of three Tribal-class destroyers built on the island during the Second World War.

1942— Flight Sergeant Rawden Middleton of Bomber Command is posthumously awarded the Victoria Cross for his actions during a raid on Turin, Italy.  His is the first Victoria Cross awarded to a serving member of the RAAF.

1942— HMAS Quiberon and HMS Quintin sink the Italian submarine Dessie in the Mediterranean off Algeria.

1942— HMAS Adelaide in action with the German Blockade Runner Ramses in the southern Indian Ocean. Ramses is abandoned and scuttled by her crew.

1899— New South Wales Lancers involved in the battle of Graspan, South Africa.

1941— The 2/13th Infantry Battalion in the Battle of Belhamad, Tobruk.