 Early in 1862, General Grant and General Buell were advancing south through Kentucky toward Nashville, Tennessee, with Grant on the western side of the Tennessee River, and Buell on the eastern side.Confederate General Albert Sidney Johnston's Army of Tennessee was moving to oppose this advance, and Johnson chose to strike before the two Union armies could join together.He chose to attack Grant's formations on the western bank, near Pittsburg Landing and a small chapel called Shiloh Church.