177 Field Regiment RA was formed from 14 Defence Regiment RA in January 1942 at Porthcawl with three batteries. In November it became part of 33 Guards Independent Infantry Brigade in London District. 177 Field Regiment RA was disbanded in March 1944 at Retford to re-form RHQ 25 Field Regiment RA.
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.
| Jan 42 | Formed from 14 Defence Regiment | Porthcawl, Glamorgan, UK | |
| Jan 42 | Home Forces | UK | |
| Nov 42 |  |
33 Infantry Brigade (Guards) | London, UK |
| Oct 43 | Home Forces | UK | |
| Mar 44 | Disbanded | Retford, Nottinghamshire, UK |
Batteries
| Jan 42 | A, B, C |
| Mar 42 | P, Q, R |
| Jan 43 | 168, 169, 170 |