The unit was raised as 18 Brigade Royal Field Artillery in 1900. It became 18 Field Brigade Royal Artillery in June 1924. 18 Field Brigade was re-organised as 18 Field Regiment RA in May 1938 on a two battery basis. It changed to three batteries in February 1941. Post war 18 Field Regiment RA was re-designated 48 Field Regiment RA in April 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.
| 3 Sep 39 |  |
2 Infantry Division | Deepcut, Surrey, UK |
| Sep 39 | |
2 Infantry Division | France |
| Feb 40 |  |
48 Infantry Division | France |
| Jun 40 | |
48 Infantry Division | UK |
| Feb 41 |  |
24 Independent Brigade Group | UK |
| Nov 42 | 43 Indian Armoured Division | Secunderabad, India | |
| Apr 44 | 172 Line of Communication | India | |
| Jun 44 | 50 Indian Tank Brigade | India | |
| Sep 44 | 255 Indian Armoured Brigade | Assam, India | |
| Dec 44 |  |
33 Indian Corps | Burma (Myanmar) |
| Feb 45 | 16 Army Group RA | Burma (Myanmar) | |
| Apr 45 |  |
4 Corps | Burma (Myanmar) |
| Jun 45 |  |
25 Indian Division | India |
Batteries
| Oct 19 | 59, 93, 94, 95 |
| May 38 | 59/93, 94/95 |
| Feb 41 | 59, 93, 94/95 |
Equipment
| Sep 39 | 24 x 18/25 pdr Guns |
| Dec 43 | 24 x 105mm Self Propelled M7 Priest, 10 x Sherman Observation Post |
| Jan 45 | 16 x 105 mm Self Propelled M7 Priest |