Premise: American Civil War . The Union finally won the war when General Robert E. Lee surrendered to General Ulysses S. Grant at the battle of Appomattox , which triggered a series of surrenders by Confederate generals throughout the southern states . Ulysses S. Grant . As Commanding General ( 1864 -- 69 ) , Grant worked closely with President Abraham Lincoln to lead the Union Army to victory over the Confederacy in the American Civil War . In 1862 , Grant took control of Kentucky and most of Tennessee , and led Union forces to victory in the Battle of Shiloh , earning a reputation as an aggressive commander . Ulysses S. Grant was the most acclaimed Union general during the American Civil War and was twice elected President .
Hypothesis: Ulysses S. Grant was not in the American Civil War.
Label: CONTRADICTION