The Denbighshire Militia, later the Royal Denbighshire Rifles was an auxiliary regiment reorganised in the Welsh county of Denbighshire during the 18th Century from earlier precursor units. Primarily intended for home defence, it provided a contingent for service in France in the closing stages of the Napoleonic War. After a series of short-lived mergers with other Welsh militia regiments it became part of the Royal Welsh Fusiliers, It served as a Special Reserve training unit in World War I. After 1921 the militia had only a shadowy existence until its final abolition in 1953.