The 3rd Army Tank Brigade was formed on 6 May 1942 to provide armoured support to infantry formations.
For consistency with similar British units, these regiments were renamed the 1st, 2nd and 3rd Army Tank Battalions respectively.
[3] Upon formation, the headquarters of the 3rd Army Tank Brigade was located at Greta, New South Wales.
The 1st and 2nd Army Tank Battalions were stationed in the nearby towns of Dungog and Largs, and the 3rd Army Tank Battalion was in the process of moving from Goulburn, New South Wales to Greta.
[6] On 16 July 1943 it was decided to convert the 3rd Army Tank Brigade into two independent battalion groups as part of broad reforms to the structure of the Army, through which units not considered likely to see combat were disbanded to free up manpower and other resources.