151 (Ayrshire Yeomanry) Field Regiment RA (TA) was converted from The Ayrshire Yeomanry (Earl of Carrick’s Own) (TA) in February 1940 with two batteries . In January 1941 a third battery was formed. The Regiment went into suspended animation in February 1946. 151 (Ayrshire Yeomanry) Field Regiment RA (TA) was re-constituted as The Ayrshire Yeomanry (Earl of Carrick’s Own) Royal Armoured Corps (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.
| Feb 40 | Formed from Ayrshire Yeomanry | Ayr, Ayrshire, UK | |
| Feb 40 | Home Forces | Ayr, Ayrshire, UK | |
| Sep 40 |  |
46 Infantry Division | Cupar, Fife, UK |
| Dec 40 | |
46 Infantry Division | Kettleholm, Dumfriesshire, UK |
| Jan 41 | |
46 Infantry Division | Fakenham, Norfolk, UK |
| Jun 42 |  |
11 Armoured Division | UK |
| Jan 43 | |
11 Armoured Division | Newmarket, Suffolk, UK |
| Mar 43 | |
11 Armoured Division | Beverley, Yorkshire, UK |
| May 44 | |
11 Armoured Division | Aldershot, Hampshire, UK |
| 13 Jun 44 | |
11 Armoured Division | NW Europe |
Batteries
| Feb 40 | A, B |
| Jan 41 | A, B, C |
| Mar 42 | P, Q, R |
| Jan 43 | 123, 124, 125 |
Equipment
| Jun 44 | 25 pdr |
| Nov 44 | Weasel Observation Post vehicles (123 & 124 Batteries) |