On 1 June all AA regiments equipped with 3-inch or the newer 3.7-inch guns were termed Heavy Anti-Aircraft (HAA) to distinguish them from the new Light Anti-Aircraft (LAA) units being formed.
In August and September 1940, the Cardiff Gun Defence Area (GDA) had 26 HAA guns.
The number of raids over South Wales, and the number of times the guns engaged, increased sharply during August.
At this time, 77th (W) HAA Rgt was deployed as follows:
239 HAA Bty
The Bulwarks, Porthkerry – 4 x static 3.7-inch, later 8 x 3.7-inch with GL
Sully – 4 x 3.7-inch
240 HAA Bty
Llwyn-y-Grant, Cardiff – 2 x 3-inch,
New House, Newport – 2 x 3-inch, 2 x 3.7-inch, later 4 x static 3.7-inch
241 HAA Bty – detached to 4th Anti-Aircraft Division
242 HAA Bty
Ely Racecourse, Cardiff – 4 x 3.7-inch
Intake, West Llandaff – 2 x 3.7-inch
By late September, 242 HAA Bty had moved to:
Lavernock Fort, Penarth – 6 x static 3.7-inch with GL
Merry Harriers, Cardiff – 4 x mobile 3.7-inch
and 241 HAA Bty had returned and taken over:
Mardy Farm – 4 x static 3.7-inch
Llwyn-y-Grant, Cardiff – 2 x 3-inch, later 2 x 3-inch joined from New House, while 240 HAA Bty had taken over:
Pye Corner, Cardiff – 4 x static 3.7-inch with GL
On 1 June all AA regiments equipped with 3-inch or the newer 3.7-inch guns were termed Heavy Anti-Aircraft (HAA) to distinguish them from the new Light Anti-Aircraft (LAA) units being formed. In August and September 1940, the Cardiff Gun Defence Area (GDA) had 26 HAA guns. The number of raids over South Wales, and the number of times the guns engaged, increased sharply during August. At this time, 77th (W) HAA Rgt was deployed as follows:
239 HAA Bty
The Bulwarks, Porthkerry – 4 x static 3.7-inch, later 8 x 3.7-inch with GL
Sully – 4 x 3.7-inch
240 HAA Bty
Llwyn-y-Grant, Cardiff – 2 x 3-inch,
New House, Newport – 2 x 3-inch, 2 x 3.7-inch, later 4 x static 3.7-inch
241 HAA Bty – detached to 4th Anti-Aircraft Division
242 HAA Bty
Ely Racecourse, Cardiff – 4 x 3.7-inch
Intake, West Llandaff – 2 x 3.7-inch
By late September, 242 HAA Bty had moved to:
Lavernock Fort, Penarth – 6 x static 3.7-inch with GL
Merry Harriers, Cardiff – 4 x mobile 3.7-inch
and 241 HAA Bty had returned and taken over:
Mardy Farm – 4 x static 3.7-inch
Llwyn-y-Grant, Cardiff – 2 x 3-inch, later 2 x 3-inch joined from New House, while 240 HAA Bty had taken over:
Pye Corner, Cardiff – 4 x static 3.7-inch with GL
2nd Welsh Brigade, Royal Field Artillery