After the fighting at Gilgal Church on the 15th and continued fighting on the 16th, the Union Army has figured out that lines in the area form a salient and begin to pour in enfilading fire on the Confederates. Other Union forces move against the thin line of southern soldiers west of Gilgal Church towards Lost Mountain. Schofield’s XXIII Corps is now in a position to turn Johnston’s left flank, Schofield may or may not realize that he is in such an advantageous position, but Johnston does and orders Hardee’s Corp to pull back at dark, to the far side of Mud Creek and establish a new line. During this retrograde movement, a Union artillery shell explodes near Brigadier General Lucius Polk. He is the nephew of Lt. Gen. Leonidas Polk and only two days after the death of his Uncle, Lucius Polk is wounded and loses his leg.