The 1st Aberdeenshire Artillery Volunteers was a part-time unit of the British Army raised in Aberdeenshire and neighbouring counties in Scotland in 1860. Its successor units served with 51st (Highland) Division through many of the major battles on the Western Front during the First World War. In the Second World War one of its regiments escaped the surrender of the 51st (Highland) Division in 1940 and went on to serve as heavy artillery in the Italian Campaign. The other regiment served with the reconstituted division at Alamein, in Sicily, Normandy and through North West Europe to the Rhine Crossing and beyond. It served on in the Territorial Army until 1967.

The 1st Forfarshire Artillery Volunteers was a part-time unit of the British Army's Royal Artillery founded in Forfarshire in Scotland in 1859. It served with 51st (Highland) Division through many of the major battles on the Western Front during the First World War. In the Second World War, its regiments saw action in the Battle of France, in the campaigns in North Africa and Sicily, and in North West Europe from D-Day to VE Day. It continued in the postwar Territorial Army until 1975.