172 Field Regiment RA was formed from 3 Defence Regiment RA in January 1942 with three batteries. The batteries were converted from three Defence Batteries. The Regiment moved to Tunisia where 155 Battery at Sidi Nsir had all its guns destroyed. Only 9 men from the Battery returned to the Regiment. As a result the C.O. designed and had made locally the “Beja Badge” to commerate the action of 155 Battery. Less than 200 of these badges were made. 172 Field Regiment RA with its batteries was disbanded in November 1945.
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 3 Defence Regiment | Hastings, Sussex, UK | |
| Jan 42 | Home Forces | UK | |
| May 42 |  |
46 Infantry Division | UK |
| Jan 43 | |
46 Infantry Division | Tunisia |
| Feb 43 | |
46 Infantry Division | Hunts Gap, Tunisia – 155 Battery detached at Sidi Nsir where it was destroyed |
| Jul 43 | |
46 Infantry Division | Sicily (reserve) |
| Sep 43 | |
46 Infantry Division | Salerno, Italy |
| Apr 44 | |
46 Infantry Division | Palestine |
| Jul 44 | |
46 Infantry Division | Italy |
| Jan 45 | |
46 Infantry Division | Greece |
| Apr 45 | |
46 Infantry Division | Italy |
| May 45 | |
46 Infantry Division | Austria |
| Nov 45 | Disbanded |
Batteries
| Dec 42 | A, B, C |
| Mar 42 | P, Q, R |
| Jan 43 | 153, 154, 155 |
| Feb 43 | 25 pdr |