The Glamorgan Yeomanry was a yeomanry regiment of the British Army originally raised in the late 18th century as a result of concern over the threat of invasion by the French. It was re-raised in the Second Boer War and saw service in both the First World War and Second World War. The lineage is maintained by C (Glamorgan Yeomanry) Troop, 211 (South Wales) Battery, 104th Regiment Royal Artillery.