Ulysses S. Grant, general in chief of the Union Army, was born Hiram Ulysses Grant on April 27, 1822, in Mt. Pleasant, Ohio. His great-grandfather was killed in the French and Indian War, and his grandfather, Noah Grant, served six years in Revolutionary War, reaching the rank of captain. When Grant entered the US Military Academy in 1839, he stood five feet one and weighed 117 pounds. In June 1844, the 4th Infantry was deployed to Louisiana and then to Texas, annexation to the United States became a political issue and cause for war with Mexico. In early September 1861 Grant was posted to Cairo, Illinois, strategically situated at the confluence of the Ohio and Mississippi Rivers. Sheridan credited Grant with an imperturbable tenacity without which he could not have beaten Lee. An early and persuasive defender was J. F. C. Fuller The Generalship of Ulysses S. Grant and Grant and Lee: A Study in Personality and Generalship.