After relieving the
siege of Gloucester, the Earl of Essex needed to return to London with his army intact. To do so, Essex first chose to travel north to
Tewkesbury in an attempt to draw the Royalist forces near Gloucester off his intended route back to London. After
King Charles and the Royalist army followed, Essex turned south and travelled through
Cheltenham to
Cirencester where on 16 September he attacked and captured the Royalist garrison. At that time, Essex thought that he was far ahead of the Royalist army and slowed the pace of his army as they marched toward
Swindon. When King Charles realized that Essex was attempting to travel directly to London, he sent Prince Rupert ahead with the cavalry in an attempt to intercept the Parliamentarian army before it could link up with reinforcements coming from London. ==Battle==