154 (Leicestershire Yeomanry) Field Regiment RA (TA) was formed in April 1940 with two batteries as a duplicate of 153 (Leicestershire Yeomanry) Field Regiment. A third battery was formed in January 1941. They served in the UK until June 1942 when they moved to the Middle East. It fought through North Africa and Italy with the 10 Indian Infantry Division. The Regiment ended the war as occupying troops in Austria with 78 Infantry Division. Post war 154 (Leicestershire Yeomanry) Field Regiment RA (TA) went into suspended animation in November 1945 and was disbanded 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.
| Apr 40 | Formed | Rufford Abbey, Nottinghamshire, UK | |
| Apr 40 | Home Forces | UK | |
| Jun 42 |  |
Middle East Forces | N Africa |
| Jan 43 |  |
6 Indian Division | Persia (Iran) |
| Apr 43 | 7 Army Group RA | N Africa | |
| May 43 |  |
10 Indian Division | N Africa |
| Jul 43 | |
10 Indian Division | Syria |
| Nov 43 | |
10 Indian Division | Palestine |
| Mar 44 | |
10 Indian Division | Italy |
| Jul 45 |  |
78 Infantry Division | Austria |
| Nov 45 | Suspended animation |
Batteries
| Apr 40 | A, B |
| Jan 41 | A, B, C |
| Mar 42 | P, Q, R |
| Jan 43 | 594, 595, 596 |