155 (Lanarkshire Yeomanry) Field Regiment RA (TA) was converted from The Lanarkshire Yeomanry (TA) in February 1940 with two batteries . In January 1941 a third battery was formed. The Regiment went into suspended animation in February 1942 after being captured in Singapore. 155 (Lanarkshire Yeomanry) Field Regiment RA (TA) was re-constituted as The Lanarkshire Yeomanry 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 Lanarkshire Yeomanry | Lanark, Lanarkshire, UK | |
| Feb 40 | Home Forces | UK | |
| May 41 |  |
9 Indian Division | Kirkee, India |
| Aug 41 | |
9 Indian Division | Malaya – A Battery remained in India to form 160 Field Regiment |
| Oct 41 |  |
11 Indian Division | Malaya |
| 15 Feb 42 | Captured at Singapore | Suspended animation |
Batteries
| Feb 40 | A, B |
| Jan 41 | A, B, C |
Equipment
| Aug 41 | 25 pdr Gun |
| Sep 41 | 16 x 4.5 inch Howitzer |
| Jan 42 | C Battery 8 x 25 pdr Gun |