 Jackson became commander of the army's Southern Division, Brown became commander of the army's Northern Division, and the brigadier generals were assigned leadership of departments within the divisions.Scott obtained a leave of absence to study warfare in Europe, though to his disappointment, he reached Europe only after Napoleon's final defeat at the Battle of Waterloo.Upon his return to the United States in May 1816, he was assigned to command army forces in parts of the Northeastern United States.