The Royal Monmouthshire Royal Engineers (Militia) is the most senior regiment of the British Army Reserve. The regiment was formed in 1539 during the reign of by King Henry VIII, making it the second oldest regiment of the British Army (The Honourable Artillery Company was formed in 1537). The R Mon RE (M) became a militia unit in 1660 and then became a part of the Royal Engineers in 1877. History The two 'Royals' The regiment was formed as a posse comitatus in 1539 during the reign of by King Henry VIII; it went on to become a trained band and then a militia unit in 1660. It is unique in having the word 'Royal' appear twice in its name. It gained the first Royal in 1804 when it was the Monmouth and Brecon Militia. The second was acquired in 1877 when the regiment transferred from an infantry unit into a Special Reserve section of the expanding Royal Engineers. On 1 April 1967, the existing regiment absorbed 43rd Wessex Division RE (TA), 48th South Midland Division RE (TA) and 53rd Welsh Division RE (TA). Seniority dispute with the Honourable Artillery Company The records of the Honorable Artillery Company (HAC) indicate that it was formed two years prior to the Royal Monmouthshire Royal Engineers (Militia). However, in 1930 the Army Council (Army Board from 1964) reviewed the Army's precedence table and King George V agreed that, on account of its status as a militia unit, the Royal Monmouthshire Royal Engineers (Militia) were the senior regiment. In 1957 the matter was investigated further and Queen Elizabeth II also agreed that the Royal Monmouthshire Royal Engineers (Militia) were the senior regiment: From:-Lieut.-Colonel The Rt. Hon. Sir Michael Adeane, K.C.B., K.C.V.O . Private Secretary to the Queen, Buckingham Palace, S.W.1. 12th March, 1957. My dear Playfair, Thank you for your letter of 8th March which I have laid before The Queen and which Her Majesty has read with interest. I am to say that the recommendation of the Honours and Distinctions Committee with regard to the relative precedence of the Royal Monmouthshire Royal Engineers and the Honourable ArtiIlery Company meets with the Queen's approval. Yours sincerely, M. E. ADEANE The Royal Jersey Militia The Jersey Militia were brought under the command of the R Mon RE (M) in 2007. The Jersey Militia was formed in 1337 when Edward III ordered "all his faithful peoples