6th Anti-Aircraft Brigade (as lieutenant-colonel's commands were then known in the Royal Artillery) was formed on 6 September 1935 at Lichfield around a nucleus of 12 (Independent) AA Battery with a newly formed 16 AA Battery.
On 1 November it was joined by 3 AA Battery, which had been reformed after World War I, and by 1 AA Machine Gun Battery, both from 1st AA Brigade.
Before the end of the year the new unit moved to Blackdown Barracks, near Aldershot in Hampshire, where it came under the command of 1st Air Defence Brigade.
Over the next few years it had the following organisation:
 
Headquarters (HQ)
3 AA Bty
12 AA Bty
16 AA Bty (left for 4th AA Bde on 1 July 1936 and was replaced by 15 (Independent) AA Bty)
1 Machine Gun Bty (redesignated 1 Light AA Bty 1 May 1937 and left by August 1939 and later joined 1st LAA Rgt)
Apart from 1 MG Bty, the standard equipment of the batteries was the QF 3-inch 20 cwt AA gun that had been used in World War I, mounted on a cruciform travelling platform and towed by a lorry.
The brigade became 6th AA Regiment on 1 May 1938 when the RA changed its unit designations and from 1 June 1940 the 6th and other heavy AA (HAA) regiments and batteries adopted the HAA designation.
The regiment formed part of 1 AA Brigade (previously 1 AD Bde) in Aldershot Command.
6th Anti-Aircraft Brigade (as lieutenant-colonel's commands were then known in the Royal Artillery) was formed on 6 September 1935 at Lichfield around a nucleus of 12 (Independent) AA Battery with a newly formed 16 AA Battery. On 1 November it was joined by 3 AA Battery, which had been reformed after World War I, and by 1 AA Machine Gun Battery, both from 1st AA Brigade. Before the end of the year the new unit moved to Blackdown Barracks, near Aldershot in Hampshire, where it came under the command of 1st Air Defence Brigade. Over the next few years it had the following organisation:
 
Headquarters (HQ)
3 AA Bty
12 AA Bty
16 AA Bty (left for 4th AA Bde on 1 July 1936 and was replaced by 15 (Independent) AA Bty)
1 Machine Gun Bty (redesignated 1 Light AA Bty 1 May 1937 and left by August 1939 and later joined 1st LAA Rgt)
Apart from 1 MG Bty, the standard equipment of the batteries was the QF 3-inch 20 cwt AA gun that had been used in World War I, mounted on a cruciform travelling platform and towed by a lorry. The brigade became 6th AA Regiment on 1 May 1938 when the RA changed its unit designations and from 1 June 1940 the 6th and other heavy AA (HAA) regiments and batteries adopted the HAA designation. The regiment formed part of 1 AA Brigade (previously 1 AD Bde) in Aldershot Command.
6th Heavy Anti-Aircraft Regiment, Royal Artillery