After weeks of movement between the Union General W.T. Sherman's offensive against Atlanta and the defending Confederate Army of the Tennessee under General Joe Johnston, Sherman ordered a change of tactics. He organized a frontal assault on the Confederate right flank, anchored on Kennesaw Mountain. Despite a massive preparatory bombardment, Confederate trenches were easily held and 3000 Union soldiers became casualties. Sherman never repeated such direct attacks and the campaign of maneuver continued. (By John Osborne)