The Siege of Bridgwater took place in July 1645, during the First English Civil War, when a Royalist garrison surrendered to a Parliamentarian force under Sir Thomas Fairfax. After their victory at Naseby in June, Fairfax and the New Model Army moved into Somerset, where they linked up with the Western Association Army led by Edward Massey. On 10 July, their combined force destroyed the last significant Royalist field army at Langport, clearing the way for an attack on Bridgwater.