On the next day General Grant ordered a general attack on the Confederate line. This attack was led by General Warren, whose progress was very slow owing to the dense thickets of low cedar and the walls of abatis, which were thrown in their way by the Confederates. This advance of General Warren was met by a heavy artillery and musket fire from Longstreet's corps, under command of Anderson. Warren's troops came on notwithstanding the heavy fire from all sides. Some of his soldiers even crossed over the breastworks and were either killed or taken prisoners by the Confederates. The Federals finally retreated with heavy loss. Grant now thought it best to attack the Confederate lines in front of Wright's corps. This was done late in the evening by several divisions under Upton. He advanced quickly through a terrible fire and gained the entrenchments, where they had a terrible hand-to-hand conflict with bayonets fixed. The Confederates were overpowered by numbers and gave way and fell back to their second line of entrenchments. For this brave act, Upton was made a brigadier-general. The Confederates, however, were reënforced, and Upton retired from the position which he had gained. The battle was yet indecisive and both armies had suffered great loss. Owing to the heavy rains, the armies lay inactive on the 11th. It was during this battle that Grant sent a message to Washington saying that he would fight it out on this line if it took all summer. Grant, in the meantime, had sent General Sheridan with his cavalry to threaten Richmond. He was closely followed by General Stuart, and on May 11th they fought a hard battle at Yellow Tavern, in which General Stuart was killed. His death was a severe loss to the Confederacy. His experience as a cavalry leader, obtained on many battlefields, was such that his place could not be filled. A large statue has been erected to his memory in the Hollywood cemetery at Richmond, on which is recorded his feats of valor on many fields. Grant decided on another attack on the Confederate lines at Spottsylvania on May 12th, the objective point being the sharp angle in Lee's entrenchments. This had been anticipated by General Lee, and he had been making ready. This attack was made at daybreak by General Hancock's corps. It was the most severe and the most bloody hand-to-hand conflict of the entire battle. The attack was received by General Johnston's brigade of Ewell's corps, which was finally overpowered and captured. This was the "Old Stonewall Brigade." This was a serious loss to Lee's army. The Federals pushed on to the Confederates' second entrenchments, but were here repulsed by fresh troops under General Gordon. General Lee himself rode up with Gordon, but was forced back again by the cry of his own men: "General Lee to the rear!"