In a 2014 publication, Philpott wrote that the size and tempo of Anglo-French attacks of September could not be maintained in October and November; attacks became smaller and less ambitious. The British Expeditionary Force had become more proficient since July and the French continued to improve but the wet weather, high winds and shorter days made the delivery of supplies to the front line and the evacuation of wounded extraordinarily difficult. The attacks of the Sixth Army, south of the Fourth Army, were also postponed because of the weather; French aircraft were grounded and the flow of supplies interrupted. Attacks from achieved little and the offensive south of Bouchavesnes towards Péronne was abandoned. The French continued to attack to the north-east to capture the Saillisels, next to the British attacks towards Bapaume.