414 Battery Royal Horse Artillery had been a battery in 104 Royal Horse Artillery (Essex Yeomanry) (TA). In January 1942 it was detached and sent to Burma (Myanmar) under 7 Armoured Brigade. 414 Battery Royal Horse Artillery was expanded in August to form 14 Royal Horse Artillery.
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 |  | 7 Armoured Brigade | Egypt |
| Feb 42 | | 7 Armoured Brigade | Rangoon, Burma (Myanmar) |
| May 42 | | 7 Armoured Brigade | Chindwin River, Burma (Myanmar) |
| May 42 | | 7 Armoured Brigade | Poona, India |
| May 42 | | 7 Armoured Brigade | Dhond, India |
| Aug 42 | | 7 Armoured Brigade | Dhond, India |
In August 1942, 414 Battery was informed it was to be expanded into a two battery Regiment. Until a name for these new units was decided it would be known as X RHA with 414 & Y Batteries. On the 1 September 1942 the new regiment came into being as 14 Royal Horse Artillery. It was now a three battery Regiment with the original 414 Battery, the recently independent 524 Battery and the newly formed 525 Battery (ex Y).
Equipment
| Jan 42 | 25 pdr Guns, Quad Tractors – D & E Troops 4 guns each |
| Feb 42 | Stuart Tank as Observation Post – 1 per Troop on loan from supported unit D Troop with 7 Hussars, E Troop with 2 RTR |