515 (Suffolk) Coast Regiment RA (TA) was formed from a part of the Suffolk Heavy Regiment RA (TA), in July 1940. The Regiment was placed in to suspended animation in January 1946. 515 (Suffolk) Coast Regiment RA (TA) was reconstituted as 419 (Suffolk) Coast 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.
| Jul 40 | Formed from part of Suffolk Heavy Regiment | Harwich, Essex, UK | |
| Jul 40 |  |
Eastern Command | Harwich, Essex, UK |
| Jan 42 |  |
2 Corps, North Bank Fire Command | Harwich, Essex, UK |
| May 42 | |
2 Corps, North Bank Fire Command (Harwich Defences) | Great Yarmouth, Suffolk, UK |
| Jun 43 | |
2 Corps District | Great Yarmouth, Suffolk, UK |
| Mar 44 | |
Eastern Command, HQ Coast Artillery | Felixstowe, Suffolk, UK |
| Jan 46 | Suspended animation |
Batteries
| Jul 40 | A (Brackenbury Bty), B (Landguard Fort), C (Darrell’s Bty), D (Beacon Hill) |
| Dec 40 | A, B, C, D, 329 (Manor House) |
| Jan 41 | A, B, C, D, E (Cornwallis Bty), F (Angel Gate), 329 |
| Apr 41 | 278 (Brackenbury Bty), 279 (Landguard Fort), 280 (Darrell’s Bty), 281 (Beacon Hill), 282 (Cornwallis Bty), 283 (Angel), 329 |
| Jun 41 | 138 (Felixstowe), 278, 279, 280, 281, 282, 283 |
| Feb 42 | 138, 278, 279, 280, 281, 282, 283, 332 (Bawdsey) |
| Mar 42 | 138, 278, 279, 280, 332 |
| Aug 42 | 110, 138, 278, 279, 280, 332 – 56 Coast Observer Detachment |
| Oct 42 | 138, 278, 279, 280, 332 – 56 Coast Observer Detachment |
| Nov 43 | 138, 278, 279, 280, 332 – 23, 56 & 82 Coast Observer Detachments |
| Apr 44 | 138 (Manor House), 278, 279, 280, 282, 332 |
| Jun 45 | 215, 280, 282, 427 |
Equipment
| 2 x 9.2 inch Guns | Brackenbury Battery | 278 Battery |
| 2 x 12 pdr QF Guns, 2 x Twin 6 pdr Guns | Darrell’s Battery | 280 Battery |
| Twin 6 pdr Gun | Cornwallis Battery | 282 Battery |
| 2 x 6 inch Guns, Twin 6 pdr Gun | Beacon Hill | 283 Battery |
| 2 x 6 inch Guns | Bawdsey | 332 Battery |