9th Infantry Brigade (New South Wales) [Third Division] Formed in New South Wales March 1916 and assigned to Third Division.

Subunits:

• 33rd Infantry Battalion March 1916 to past November 1918
• 34th Infantry Battalion March 1916 to past November 1918
• 35th Infantry Battalion March 1916 to past November 1918
• 36th Infantry Battalion March 1916 to April 1918
• 9th Machine Gun Company July 1916 to February 1918
• 9th Light Trench Mortar Battery 24 November 1916 to past November 1918 

Commanders:

• Colonel/Brigadier General A. Jobson 10 February 1916 to 25 August 1917
• Brigadier General C. Rosenthal 25 August 1917 to 31 May 1918
• Brigadier General H. A. Goddard 1 June1918 to past November 1918

Campaigns:

England, Western Front: Messines, Broodeseinde, Passchendaele, Hamel, Amiens, Mont St Quentin, Hindenburg Line