This was a unit of Britain’s pre-war regular army. It is also sometimes shown as 42 Brigade RFA.
- This brigade was originally comprised of numbers 29, 41 and 45 Batteries RFA and the Brigade Ammunition Column. It was placed under command of the 3rd Division and went to France with it in August 1914.
- 129 (Howitzer) Battery joined from 30 (Howitzer) Brigade of the same division, on 14 May 1916.