Formed as 3 Highland Brigade Royal Field Artillery (TF) in February 1920. It became 77 (Highland) Brigade RFA (TA) in 1921. It changed title again in June 1924 becoming 77 (Highland) Field Brigade RA (TA). 77 (Highland) Field Regiment RA (TA) was re-designated from 77 Field Brigade in November 1938 on a two battery basis. A third battery was raised in December 1940. Post war 77 (Highland) Field Regiment RA (TA) was placed into suspended animation in February 1946 and reconstituted as 277 (Highland ) Field Regiment RA(TA) 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.
| 3 Sep 39 |  |
51 Infantry Division | Renfrew, Renfrewshire, UK |
| Jan 40 | |
51 Infantry Division | Borden, Hampshire, UK |
| Jan 40 | |
51 Infantry Division | France |
| Mar 40 |  |
4 Infantry Division | France |
| Jun 40 |  |
4 Infantry Division | Charmouth, Dorset, UK |
| Sep 40 | |
4 Infantry Division | Barton on Sea, Hampshire, UK |
| 24 Mar 43 | |
4 Infantry Division | Algeria |
| Jan 44 | |
4 Infantry Division | Suez, Egypt |
| Feb 44 | |
4 Infantry Division | Garigliano, Italy |
| May 44 | |
4 Infantry Division | Cassino, Italy |
| Jun 44 | |
4 Infantry Division | Tivoli, Italy |
| Jun 44 | |
4 Infantry Division | Trasimene Line, Italy |
| Jul 44 | |
4 Infantry Division | Chianti Mountains, Italy |
| Sep 44 | |
4 Infantry Division | Gothic line, Italy |
| Dec 44 | |
4 Infantry Division | Greece (Provided an infantry company for RA Battalion) |
Batteries
| 1921 | 305, 306, 307, 308 |
| Nov 38 | 305, 306 (Renfrew) – 307 & 308 Batteries to 128 Field Regiment |
| Dec 40 | 305, 306, 455 |
Equipment
| Jan 40 | 12 x 4.5 in Howitzers, 12 x 18 pdr, Morris CDSW FAT’s |
| Sep 40 | French 75 mm gun |
| 1940 to Dec 44 | 25 pdr |