Ulysses S. Grant (born Hiram Ulysses Grant; 27 April 1822 - 23 July 1885) was an American military officer and statesman who served as the 18th President of the United States (1869-1877) and as Commanding General of the United States Army during the final years of the American Civil War. His legacy remains a subject of ongoing historical reassessment, with scholarly opinion divided on the relative weight of his military achievements, his presidency's Reconstruction policies, and the corruption scandals that marked his administration.

Grant is broadly regarded as the Union general most responsible for the North's victory in the Civil War. His campaigns in the Western Theater - including the capture of Fort Donelson (1862), the siege of Vicksburg (1863), and the Battle of Chattanooga (1863) - and his subsequent command of all Union armies in the Eastern Theater, culminating in the Confederate surrender at Appomattox Court House on 9 April 1865, are treated as decisive by most military historians.

His two-term presidency is more contested. Historians have traditionally emphasized the widespread corruption within his administration - including the Crédit Mobilier affair, the Whiskey Ring scandal, and the Black Friday gold market manipulation - while acknowledging that Grant himself was not found to have profited personally. A significant reassessment beginning in the late twentieth century has foregrounded his administration's vigorous early enforcement of Reconstruction legislation, its prosecution of the Ku Klux Klan under the Enforcement Acts of 1870-1871, and its general support for the civil and political rights of formerly enslaved African Americans in the South. The extent to which these efforts failed due to Grant's own limitations, congressional opposition, or broader structural forces within United States of America - 19th Century History remains debated.

Grant's post-presidential years included a world tour (1877-1879), a failed business venture, and the composition of his Personal Memoirs (1885), completed days before his death from throat cancer. The Memoirs are widely considered one of the finest military autobiographies in the English language.

Grant as indispensable Union victor: Many military historians hold that Grant's strategic vision, logistical competence, and willingness to sustain costly offensive operations were essential to Union victory in ways no other available commander matched. See ulysses-s-grant-indispensable-union-victor-viewpoint.

Grant as Reconstruction champion: A revisionist tradition, substantially advanced by historians such as John Y. Simon and later Joan Waugh and Ron Chernow, argues that Grant's commitment to black civil rights and federal enforcement of Reconstruction was more sustained and sincere than earlier historiography acknowledged. See ulysses-s-grant-reconstruction-champion-viewpoint.

Grant as failed president: An older historiographical tradition - associated with the Dunning School and early-twentieth-century assessments - characterized Grant's presidency primarily through the lens of administrative corruption and the eventual collapse of Reconstruction, treating him as a well-meaning but politically naive figure overwhelmed by office. See ulysses-s-grant-failed-president-viewpoint.

Grant as architect of Indigenous dispossession: Some historians emphasize Grant's “Peace Policy” toward Native Americans, which combined the concentration of tribes onto reservations with military force against those who resisted, as a central feature of his presidency deserving distinct moral and historical accounting. See ulysses-s-grant-indigenous-policy-viewpoint.

The Whiskey Ring: A conspiracy involving Treasury officials, distillers, and members of Grant's inner circle that defrauded the federal government of millions in excise tax revenue; Grant's personal knowledge and the role of his secretary Orville Babcock remain disputed. See ulysses-s-grant-whiskey-ring-controversy.

Order No. 11 (1862): Grant issued General Orders No. 11 expelling Jewish civilians from the Department of the Tennessee, one of the most explicit instances of official antisemitism in American military history; the order was revoked by President Lincoln within weeks. See ulysses-s-grant-general-orders-no-11-controversy.

Appomattox and the terms of surrender: The lenient terms Grant extended to Robert E. Lee's Army of Northern Virginia at Appomattox Court House have been evaluated variously as magnanimous statesmanship and as a political accommodation that contributed to the mythology of the Lost Cause. See ulysses-s-grant-appomattox-terms-controversy.

• ulysses-s-grant-history - Full biographical and historical background
• Appomattox Court House - The surrender that ended the Civil War in the Eastern Theater
• United States of America - 19th Century History - Broader historical context
• Reconstruction Era - The postwar political and social transformation of the South
• ulysses-s-grant-reconstruction-champion-viewpoint
• ulysses-s-grant-failed-president-viewpoint
• ulysses-s-grant-indispensable-union-victor-viewpoint
• ulysses-s-grant-indigenous-policy-viewpoint
• ulysses-s-grant-whiskey-ring-controversy
• ulysses-s-grant-general-orders-no-11-controversy
• ulysses-s-grant-appomattox-terms-controversy
• American Civil War
• reconstruction-era-debate-failure-causes-debate

1. Jean Edward Smith, Grant (New York: Simon & Schuster, 2001), 1-15. Standard single-volume biography covering Grant's life from birth through death. 2. Ron Chernow, Grant (New York: Penguin Press, 2017), 3-12. Recent comprehensive biography emphasizing Grant's Reconstruction record and rehabilitation of his presidential reputation. 3. Ulysses S. Grant, Personal Memoirs of U. S. Grant, 2 vols. (New York: Charles L. Webster & Company, 1885). Primary source; widely regarded as a literary achievement. 4. Brooks D. Simpson, Ulysses S. Grant: Triumph Over Adversity, 1822-1865 (Boston: Houghton Mifflin, 2000). Detailed military biography through the end of the Civil War. 5. Mark Wahlgren Summers, The Era of Good Stealings (New York: Oxford University Press, 1993). Contextualizes Grant-era corruption within broader postwar political culture. 6. Joan Waugh, U.S. Grant: American Hero, American Myth (Chapel Hill: University of North Carolina Press, 2009). Examines Grant's reputation across time. 7. Bertram Wallace Korn, American Jewry and the Civil War (Philadelphia: Jewish Publication Society, 1951), 121-155. Standard account of General Orders No. 11 and its revocation. 8. Heather Cox Richardson, West from Appomattox: The Reconstruction of America after the Civil War (New Haven: Yale University Press, 2007). Places Grant's presidency within the national arc of Reconstruction and its undoing.