135 (East Anglian)(Herts Yeomanry) Field Regiment RA (TA) started to form in July 1939 with two batteries as a duplicate of 86 (East Anglian)(Herts Yeomanry) Field Regiment. A third battery was raised in June 1941. 135 (East Anglian)(Herts Yeomanry) Field Regiment RA (TA) went into suspended animation after capture at Singapore in February 1942. It was disbanded in January 1947.
Illustrations of the formation badges under which a unit served or supported are given. This is no guarantee that the unit used this formations badge.
(Title authorised February 1942)
| Jul 39 |  |
18 Infantry Division | Hertford, Hertfordshire, UK |
| Sep 39 | |
18 Infantry Division | Hitchin, Hertfordshire, UK |
| Nov 39 | |
18 Infantry Division | Kimberley, Norfolk, UK |
| Jan 41 | |
18 Infantry Division | Lockerbie, Dumfries, UK |
| Apr 41 | |
18 Infantry Division | Macclesfield, Cheshire, UK |
| Dec 41 | |
18 Infantry Division | India |
| Jan 42 | 3 Indian Corps | Singapore | |
| 15 Feb 42 | Captured at Singapore | Suspended animation |
Batteries
| 3 Sep 39 | 336 (Northampton), 344 (Hitchin) |
| Jun 41 | 336, 344, 499 |
Equipment
| Nov 39 | 4 x 4.5 inch Howitzers |
| Feb 40 | 336 Battery – 4 x 4.5 inch Howitzers 344 Battery – 2 x 18 pdr Mk II PA |
| May 40 | Canadian Ross rifles |
| Aug 40 | 336 Battery – 4 x 4.5 inch Howitzers 344 Battery – 2 x 18 pdr Mk II PA, 8 x 75 mm Guns (Porteed on 30 cwt Fordsons) |
| Nov 40 | 336 Battery – Guy Quad Ant Tractors 344 Battery – Morris C 8 Tractors |
| Jan 41 | 25 pdr Mk II Guns |
| Sep 41 | Chevrolet Quad Tractors |
| Jan 42 | 336 Battery – 8 x 4.5 inch Howitzers Mk I PA, 344 Battery – 8 x 25 pdr Guns American Chevrolet 1½ ton 4×4 Trucks as tractors |