sentences:  Their task would be to delay the Parliamentarians in the Cotswolds until Rupert could come up with the rest of the Royalist cavalry in support, should Essex march to the relief of Gloucester.Essex began his march from Colnbrook, west of London, on 26 August.His plan was to relieve Gloucester without provoking a major battle in which, with the Royalist superiority in cavalry, he would be at a disdvantage.