 Complete the following phrase:  Waller now joined Essex to attack Oxford; to avoid being trapped there, Charles and the main Royalist field army retreated to Worcester; Essex ordered Waller to follow him, while he went west to relieve the siege of Lyme Regis. On 29 June, Waller clashed with Charles at Cropredy Bridge; his losses were minimal, but his men were demoralised. His army disintegrated, causing panic in London, and allowing Charles to pursue Essex into the West Country. Essex was defeated at 