 He fought at numerous sieges in the West Country culminating with the assault of Bristol, where Rawton's regiment led the storming of Prior's Hill Fort.Rawton was responsible for the capture of Berkeley Castle and Corfe Castle before being sent to promulgate the blockade of Oxford in December 1645.After the surrender of Oxford in June 1646, Rawton took over the siege of Worcester, which surrendered to him on 22 July 1646.