John Adair (author) John Adair (author) Professor John Eric Adair (born 18 May 1934) is a British academic who is a leadership theorist and author of more than forty books (translated into eighteen languages) on business, military and other leadership. Adair was born in Luton and educated at St Paul's School before undertaking his National Service as a second lieutenant in the Scots Guards from 1953 to 1955. Unusually, he served as adjutant of a Bedouin regiment in the Arab Legion and was briefly in command of the garrison of Jerusalem in the front line. He also studied at Hull Nautical College (where
Mark L. Hersey of the Spanish–American War and served as a quartermaster for the 12th Infantry in the Fifth Army Corps in the Santiago Campaign. Hersey was promoted to captain in 1899 and served as part of the China Relief Expedition during the Boxer Rebellion. In 1902 he received a Master of Arts degree from Bates College. Following the Philippine Insurrection, Hersey served as a colonel with the Philippine Constabulary for ten years. Hersey was promoted to major in 1911 and to lieutenant colonel in 1916. He served under General John J. Pershing during the punitive expedition in Mexico in 1916. Hersey was