The Connaught Rangers ("The Devil's Own") was an Irish line infantry regiment of the British Army formed by the amalgamation of the 88th Regiment of Foot (Connaught Rangers) (which formed the 1st Battalion) and the 94th Regiment of Foot (which formed the 2nd Battalion) in July 1881.
The regiment were disbanded in 1922 when the Irish Free State gained independence.
The badge is in the form of an Irish harp, surmounted by crown, with a scroll below with the unit title, 'Connaught Rangers', below.