Formulate an answer to this elaborate question: When did British Army infantry regiment was formed in 1881 under the Childers Reforms by the amalgamation of the 30th (Cambridgeshire) Regiment of Foot and 59th (2nd Nottinghamshire) Regiment of Foot with the militia and rifle volunteer units of eastern Lancashire merge with infantry regiment of the British Army in existence from 1959 until 2006, and was part of the King's Division?
A:
2006