4th Motor Brigade (Australia)

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4th Motor Brigade
On exercise near Wallgrove, February 1940
Active1921–1942
Country Australia
AllegianceAustralian Crown
BranchAustralian Army
TypeCavalry (1921–1942)
Motorised infantry (1942)
SizeBrigade
Part of1st Cavalry Division
1st Motor Division
Insignia
Unit colour patch

The 4th Motor Brigade was a formation of the Australian Army during the interwar years and the early part of the World War II. A formation of the part-time Militia, the brigade was formed in 1921 as the 4th Cavalry Brigade. At this time, it consisted of three light horse regiments based in southern and western New South Wales. During World War II, the brigade was mobilised for defensive duties in December 1941, and assumed positions along the southern New South Wales coast to defend against a possible invasion. It was converted into the 4th Motor Brigade in March 1942 when it was motorised. As a motor brigade, the 4th undertook defensive duties on the south coast of New South Wales before it was converted into an armoured formation, designated the 3rd Army Tank Brigade in May 1942.

History[edit]

The 4th Cavalry Brigade was raised as a formation of the part-time Militia in 1921. Its headquarters was established in Paddington, Sydney with the brigade's area of responsibility stretching across southern and western New South Wales.[1] At the time, it consisted of the 1st, 6th, 7th, and 21st Light Horse Regiments.[2] By 1927, the brigade consisted of the 1st, 6th and 7th Light Horse, as the 21st had been reassigned as divisional cavalry. These regiments were based in Parramatta, Orange and Goulburn, with troops being drawn from areas previously assigned to the disbanded 3rd and 4th Light Horse Brigades. By 1938, the 21st had returned to the brigade, and the 1st Light Horse had been converted to a machine gun regiment.[3]

During World War II, the brigade was assigned to the 1st Australian Cavalry Division. Following Japan's entry into the war in December 1941, the brigade was mobilised for full time service. It was concentrated at Cowra, initially but moved to Bowral, in February 1942. There, the brigade was assigned a defensive role to cover the southern New South Wales coast and in the event of an invasion was to prevent an enemy force from advancing towards the Central Tablelands. At this time, the brigade's constituent units were the 6th Motor Regiment based at Nowra, the 7th Light Horse Regiment at Dapto, the 14th Machine Gun Regiment at Berrima, and the 3rd Armoured Regiment at Goulburn and Moruya.[1]

The brigade did not see any active service and was converted into the 4th Australian Motor Brigade in March 1942,[1] as part of ongoing efforts to motorise or mechanise Australia's mounted forces in the early war years.[4][5] As a result of this, the brigade's three light horse regiments – the 6th, 7th and 14th – were converted into motor regiments;[6] each regiment was authorised to operate 14 scout cars and 44 Universal carriers.[7] It also possessed a single armoured regiment: the 3rd. They continued their previously assigned defensive role on the south coast of New South Wales.[6]

The brigade was assigned to the 1st Australian Motor Division on formation and did not see any active service.[8] In May 1942, the brigade was converted again, this time becoming the 3rd Army Tank Brigade. When it was converted to an armoured role, one the brigade's motor regiments – the 14th – was disbanded while the 6th and 7th transferred to the 2nd Motor Brigade. The 3rd Armoured Regiment was converted into the 3rd Army Tank Battalion, and joined two other such battalions, which were formed to provide close support to infantry in combat. The 3rd Army Tank Brigade moved to Largs, and the brigade's positions on the southern New South Wales coast were reassigned to the 2nd Infantry Division.[9]

Brigade units[edit]

The following units served with the brigade as a cavalry formation during the war:[10]

The following units served with the brigade as a motorised formation during the war:[11]

See also[edit]

References[edit]

Citations[edit]

  1. ^ a b c McKenzie-Smith 2018, pp. 2119–2120.
  2. ^ "Australian Military Forces 1921–1949". Digger History. Retrieved 2 June 2019.
  3. ^ Hall 1968, pp. 75, 77 & 79.
  4. ^ Hall 1968, pp. 53–54.
  5. ^ Hopkins 1978, p. 87.
  6. ^ a b McKenzie-Smith 2018, p. 2119.
  7. ^ Hopkins 1978, p. 52.
  8. ^ "4 Australian Motor Brigade". Order of Battle. Retrieved 30 October 2009.
  9. ^ McKenzie-Smith 2018, p. 2120.
  10. ^ "4 Australian Cavalry Brigade: Subordinate units". Order of Battle. Retrieved 30 October 2009.[1]
  11. ^ "4 Motor Brigade units". Order of Battle. Retrieved 30 October 2009.

Bibliography[edit]

  • Hall, Richard John (1968). The Australian Light Horse. Blackburn, Victoria: W.D. Joynt & Co. OCLC 59504.
  • Hopkins, Ronald (1978). Australian Armour: A History of the Royal Australian Armoured Corps 1927–1972. Canberra: Australian Government Publishing Service. ISBN 978-0-642-99414-1.
  • McKenzie-Smith, Graham (2018). The Unit Guide: The Australian Army 1939–1945, Volume 2. Warriewood, New South Wales: Big Sky Publishing. ISBN 978-1-925675-146.
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