Franklin Pierce (November 23, 1804 – October 8, 1869) was the 14th president of the United States (1853–1857), a northern Democrat who saw the abolitionist movement as a fundamental threat to the unity of the nation. As a militia officer himself, he had experience mustering and drilling bodies of troops. When Congress declared war against Mexico in May 1846, Pierce immediately volunteered to join, although no New England regiment yet existed. His hope to fight in the Mexican–American War was one reason he refused an offer to become Polk's Attorney General.