 Navarre troops who had dropped the County of Évreux and the Cotentin were entrenched in Cherbourg, already a difficult taking, and defended it against French attacks.In June 1378, having lost ground in Normandy, Charles II of Navarre rented Cherbourg in 1378 to Richard II of England for a period of three years.Bertrand du Guesclin besieged it for six months using many machines of war, but abandoned the siege in December 1378.