Up to within a very short time little had been heard about Ulysses S. Grant, the man destined to become the most successful general of the war. Like General McClellan, he was a graduate of West Point; and also like McClellan, he had resigned from the army after serving gallantly in the Mexican war. There the resemblance ceased, for he had not an atom of McClellan's vanity, and his persistent will to do the best he could with the means the government could give him was far removed from the younger general's faultfinding and complaint. He was about four years older than McClellan, having been born on April 27, 1822. On offering his services to the War Department in 1861 he had modestly written: "I feel myself competent to command a regiment if the President in his judgment should see fit to intrust one to me." For some reason this letter remained unanswered, although the Department, then and later, had need of trained and experienced officers. Afterward the Governor of Illinois made him a colonel of one of the three years' volunteer regiments; and from that time on he rose in rank, not as McClellan had done, by leaps and bounds, but slowly, earning every promotion. All of his service had been in the West, and he first came into general notice by his persistent and repeated efforts to capture Vicksburg, on whose fall the opening of the Mississippi River depended. Five different plans he tried before he finally succeeded, the last one appearing utterly foolhardy, and seeming to go against every known rule of military science. In spite of this it was successful, the Union army and navy thereby gaining control of the Mississippi River and cutting off forever from the Confederacy a great extent of rich country, from which, up to that time, it had been drawing men and supplies.