2 Survey Regiment RA was formed from 1 Survey Regiment in September 1939. In February 1946 the survey units were re-designated observation units. The Regiment was re-designated 52 Observation Regiment RA in April 1947.
| Sep 39 | Formed from part of 1 Survey Regiment | UK |
| Sep 39 | Home Forces | UK |
| Nov 39 | British Expeditionary Force | France |
| May 40 | Home Forces | UK |
| Apr 43 | War Office Control | South Africa |
| Jun 43 | War Office Control | Deolali, India |
| Aug 43 | 15 Indian Corps | Ranchi, India |
| Oct 43 | 151 Sub Area | India |
| Jul 44 | 15 Indian Corps | India |
| Oct 44 | 15 Indian Corps | Arakan, Burma (Myanmar) |
| Jul 45 | 34 Indian Corps | India |
Batteries
| Sep 39 | A Survey, B Flash Spotting |
| Aug 43 | A2, B2 |
| Sep 43 | 1, 2 |
| Jan 44 | A, B |
| Feb 44 | 43, 44 |
