From the late 1950s through 1960s, post-World War II conditions caused a number of Britain's historic infantry and cavalry regiments to be amalgamated. In 1959 two veteran infantry battalions, the Berkshire and Wiltshire Regiments, were combined into a single unit. The ancient ties of the Wiltshire Regiment with the Dukes of Edinburgh were maintained, with the present Duke graciously agreeing to serve as Colonel-in-Chief of the new regiment.
With the end of the Cold War there were further amalgamations in the British Army. Since 1994 the traditions of the Regiment have been carried on by a new unit formed by an amalgamation with the equally distinguished Gloucester Regiment.