 He is also a fellow of the Royal Asiatic Society, a member of the British Commission for Military History and a liveryman of the Worshipful Company of Farriers.Corrigan authored " Mud, Blood and Poppycock", one of the more recent histories of the First World War which challenges a number of popular cultural beliefs about that conflict.Among the targets for his book are the beliefs that British generalship was incompetent, blinkered and reactionary and that the military justice system was unfair.