The Battle of Shiloh was one of the first major battles in the Western Theater of the American Civil War. The two-day battle, April 6 and April 7, 1862, involved about 65,000 Union troops under Ulysses S. Grant and Don Carlos Buell and 44,000 Confederates under Albert Sidney Johnston (killed in the battle) and P.G.T. Beauregard. The battle resulted in nearly 24,000 killed, wounded, and missing. The two days of fighting did not end in a decisive tactical victory for either side —the Union held the battlefield but failed to pursue the withdrawing Confederate forces. However, it was a decisive strategic defeat for the Confederate forces that had massed to oppose Grant's and Buell's invasion through Tennessee. The battlefield is named after Shiloh Methodist Church, a small log church near Pittsburg Landing, Tennessee.