 Complete the following phrase:  The regiment was raised on 18 May 1849 by Lieutet JC Johnston at Mianwali as part of the Transfrontier Brigade. In 1851, the brigade was expanded and redesignated as the Punjab Irregular Force, which later became famous as the Punjab Frontier Force or The Piffers. The Piffers consisted of five regiments of cavalry, eleven regiments of infantry and five batteries of artillery besides the Corps of Guides. Their mission was to maintain order on the Punjab Frontier; a task they performed with great aplomb. The 2nd Punjab Infantry took part in numerous frontier operations besides the Great Indian Mutiny of 1857-58, when took part in Siege of Delhi, the 