1st Brigade AIF

1st Infantry Brigade (New South Wales) [First Division]
Formed in New South Wales 17 August 1914 and assigned to First Division

Subunits:

1st Infantry Battalion 17 August 1914 to past November 1918
2nd Infantry Battalion 17 August 1914 to past November 1918
3rd Infantry Battalion 17 August 1914 to past November 1918
4th Infantry Battalion 17 August 1914 to past November 1918
1st Machine Gun Company 12 March 1916 to 2 March 1918
1A/1 Light Trench Mortar Battery April 1916 to 15 June 1916
1A/2 Light Trench Mortar Battery April 1916 to 15 June 1916
1st Light Trench Mortar Battery 15 June1916 to past November 1918

Commanders:

Colonel H. N. MacLaurin 15 August 1914 to 27 April 1915 (killed)
Brigadier General H. B. Walker 29 April 1915 to 15 May 1915
Brigadier General N. M. Smyth 20 May 1915 to 23 January 1916
Lieutenant Colonel H. E. Elliott 24 January 1916 to 1 March 1916
Brigadier General N.M. Smyth 1 March 1916 to 28 December 1916
Colonel T. A. Blamey 28 December 1916 to 9 January 1917
Lieutenant Colonel I. G. Mackay 9 January to 27 January 1917
Brigadier General W. R. Lesslie 27 January 1917 to 6 June 1918
Brigadier General I. G. MacKay 6 June 1918 to 22 March 1919

Campaigns:

Egypt, Sinai: Defence of Suez Canal, Gallipoli: Landing at Anzac, Defence of Anzac, Sari Bair, Withdrawal from Anzac, Western Front: Pozieres, Retreat to the Hindenburg Line, Bullecourt, Menin Road, Broodeseinde, Hazebrouck, Amiens, Hindenburg Line

many details on this page from Ross Mallett's site