Cap Badge - The Dorsetshire Regiment. Later cap badges had "Dorsets" on them as opposed to "Dorsetshire" on them. The Dorsetshire /Dorset Regiment Cap badge consisted of the following constituent parts: Castle and Key; Sphinx and Marabout; Primus in Indis; Waterloo Wreath; Regimental name. In 1881 the 39th Regiment of Foot had become the 1st Battalion The Dorsetshire Regiment and the 54th Regiment of Foot had become the 2nd Battalion The Dorsetshire Regiment. The name of the Regiment changed from the Dorsetshire Regiment to the Dorset Regiment in 1951 after the name of the County was officially changed. In 1958 the Dorset Regiment amalgamated with the Devonshire Regiment to become the Devonshire and Dorset Regiment. The Dorset Regiment was a line infantry regiment of the British Army in existence from 1881 to 1958, being the county regiment of Dorset. Until 1951, it was formally called the Dorsetshire Regiment, although usually known as "The Dorsets". In 1958 the regiment was amalgamated with the Devonshire Regiment to form the Devonshire and Dorset Regiment. In 2007, it was amalgamated with the Royal Gloucestershire, Berkshire and Wiltshire Regiment, The Light Infantry and the Royal Green Jackets to form The Rifles.