The 1st Australian Division in 1914-1918


On 3 August 1914 - the day before Britain declared war - the Government of Australia offered an expeditionary force of 20,000 men, to be composed of a Division plus a brigade of Light Horse and titled the Australian Imperial Force. The original AIF sailed on 1 November 1914 and proceeded via Colombo to Egypt. The original intention was that the force would continue on to England but problems of accommodation being experienced by the Canadian units then in England forced a change of mind. The Force halted in Egypt and training recommenced. Thereafter the Division fought in many of the major actions of the war, including:


3 February 1915: two battalions involved in defending against Turkish attack on Suez Canal
March 1915 : 3rd Brigade moves to Lemnos
1 April 1915 : Division receives orders to prepare to make amphibious assault at Gallipoli
25 April 1915 : Division lands at what was to become forever known as ANZAC Beach
The Division withdrew from Gallipoli in late 1915.


On 13 January 1916 it was decided that the AIF would be developed to create five Divisions, four Australian and one New Zealand. The infantry brigades of 1st Division were split to create a nucleus of the 14th, 15th and 16th Brigades and places in all six brigades were filled by new drafts. The Division was warned for France and sailed on 13 March 1916. It remained in France and Flanders for the rest of the war:

  • The Battles of the Somme 1916
    - The Battle of Pozieres including the fighting for Mouquet Farm


  • Operations on the Ancre including the capture of the Thilloys
  • The Arras Offensive, in which the Division fought the German attack on Lagnicourt and in the Battle of Bullecourt
  • The Third Battles of Ypres
    - The Battle of the Menin Road (20 - 25 Sep)
    - The Battle of Polygon Wood (26 Sep - 3 Oct)
    - The Battle of Broodseinde (4 Oct)
    - The Battle of Poelcapelle (9 Oct)
    - The Second Battle of Passchendaele (26 Oct - 10 Nov)


Australian Divisions were not affected by the restructuring that took place in the British Divisions in February 1918 (in which the infantry brigades were reduced from four battalions down to three).

  • The Battles of the Lys
    When the enemy launched this second phase of the spring offensive (Operation "Georgette"), the 1st Australian Division was rushed from the Somme to help stabilise the situation and plug a gap caused by the near-destruction of the British 29th, 31st and other Divisions.

    - The Battle of Hazebrouck in which the Division fought the defence of Nieppe Forest
  • The Battle of Amiens (8-11 Aug)
  • The Second Battles of the Somme1918
    - The Battle of Albert in which the Division captured Chuignes
  • The Battles of the Hindenburg Line
    - The Battle of Epehy (18 Sept)

The Division was in Australian Corps reserve at the Armistice and was not selected to advance into Germany.

Demobilisation commenced in early 1919 and by March 1919 the Division merged with 4th Australian Division.

Order of battle

Divisional headquarters



under whose command came the Infantry Brigades and the other divisional troops listed below

1st Australian Brigade


1st Australian Infantry


2nd Australian Infantry


3rd Australian Infantry


4th Australian Infantry


1st Australian Machine Gun Company

Formed February 1916. Left to move into 1st Australian MG Battalion February 1918

1st Australian Trench Mortar Battery

Formed April 1916.

2nd Australian Brigade


5th Australian Infantry


6th Australian Infantry


7th Australian Infantry


8th Australian Infantry


2nd Australian Machine Gun Company

Formed February 1916. Left to move into 1st Australian MG Battalion February 1918

2nd Australian Trench Mortar Battery

Formed April 1916.

3rd Australian Brigade


9th Australian Infantry


10th Australian Infantry


11th Australian Infantry


12th Australian Infantry


3rd Australian Machine Gun Company

Formed February 1916. Left to move into 1st Australian MG Battalion February 1918

3rd Australian Trench Mortar Battery

Formed April 1916.

Divisional Troops


1st Australian Pioneer Bn

Formed while Division was in Egypt

21st Australian Machine Gun Company

Joined February 1917. Merged into 1st Australian MG Battalion February 1918

1st Australian Machine Gun Battalion

Formed in February 1918 by merging the 1st, 2nd, 3rd and 21st Australian Machine Gun Companies

1st Australian Divisional Train

A unit of the Army Service Corps made up of four companies, later titled 741, 742, 743 and 744 Companies ASC

1st Australian Mobile Veterinary Section


1st Australian Divisional Employment Company

Joined August 1917

Divisional Mounted Troops


4th Australian Light Horse

Left Division when it went to Gallipoli in April 1915, returned to it after Gallipoli and left again in March 1916

1st Australian Cyclist Company

Formed while Division was in Egypt, left May 1916

Divisional Royal Artillery


1st Australian Brigade RFA


2nd Australian Brigade RFA


3rd Australian Brigade RFA


21st Australian (Howitzer) Brigade RFA

Formed in Egypt, absorbed into other units by July 1916

1st Australian Divisional Ammunition Column RFA


1st Australian Heavy Battery RGA

Formed at Gallipoli in November 1915, disbanded in December

V.1.A Heavy Trench Mortar Battery RFA

Formed in June 1916, left February 1918

X.1.A, Y.1.A and Z.1.A Medium Mortar Batteries RFA

Formed in April 1916; in February 1918, Z was broken up and the other batteries reorganised to have 6 x 6-inch weapons each

Divisional Royal Engineers


1st Australian Field Company RE


2nd Australian Field Company RE


3rd Australian Field Company RE


1st Australian Divisional Signal Company RE


Divisional Royal Army Medical Corps


1st Australian Field Ambulance RAMC


2nd Australian Field Ambulance RAMC


3rd Australian Field Ambulance RAMC


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Related information

Studio portrait of an unidentified Australian soldier from a 1st Division artillery unit. He has been awarded the Military Medal, denoted by the ribbon above his pocket. Image courtesy of the Australian War Memorial.

The superb memorial to the 1st Australian Division, which stands on the site of the "Gibraltar" blockhouse at Pozieres, the scene of the Division's first experience of fighting on the Western Front. On the wooded horizon just to the right of the memorial, the vast Memorial to the Missing at Thiepval.
Larger copy


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