The Self-denying Ordinance was passed by the Long Parliament of England on 3 April 1645. Under its terms all members of the Long Parliament who were also officers in the Parliamentary army or navy were to either resign their Parliamentary seat or their military commission. This ordinance was part of a set of reforms aimed at Parliament forces, which resulted in the New Model Army, which was a centralized national arm that replace parliamentary regional armies such as the Eastern Association. It was the second attempt to pass such a measure, the first bill having been moved on 9 December 1644, had failed to pass the House of Lords.