 Gouverneur K. Warren and John Sedgwick unsuccessfully attempted to dislodge the Confederates under Maj. Gen. Richard H. Anderson from Laurel Hill, a position that was blocking them from Spotsylvania Court House.On May 10, Grant ordered attacks across the Confederate line of earthworks, which by now extended over 4 miles (6.5 km), including a prominent salient known as the Mule Shoe.Although the Union troops failed again at Laurel Hill, an innovative assault attempt by Col. Emory Upton against the Mule Shoe showed promise.