In spite of the many Unionist casualties at the Crater in 1864, Grant continued to keep his army near Petersburg. Finally, both sides made their camp there for the winter. General William Mahone was the Confederate general in charge of the Petersburg defense at this time. While the winter passed, the Union forces kept receiving enforcements while the Confederate forces had no reenforcements. As the Union forces were increased over a large area, the Confederates were forced to station their meager forces farther apart. There was a scarcity of food and clothing for the Confederates; the cold climate was most uncomfortable and demoralizing for them. On April 2, General Grant succeeded in breaking through the Confederate lines. Jefferson Davis, President of the Confederacy, was informed while attending services at St. Paul's Episcopal Church in Richmond that Petersburg could be held no longer by the Confederate forces. The Virginians knew that, if and when Petersburg fell, Richmond would fall next because Petersburg was the key to Richmond. The next day, April 3, Richmond fell. As General Richard S. Ewell and his Confederate troops evacuated the city, they burned bridges and large tobacco and cotton warehouses to prevent the Union forces from receiving beneficial goods. However, a surprising wind spread the flames rapidly and resulted in approximately thirty million dollars worth of damage to the City of Richmond. Three days later, the final battle of the Army of Northern Virginia occurred at Sailor's Creek near Farmville. The rearguard of Lee's Army on the way to Lynchburg was completely surrounded and attacked by Unionists. The Confederates lacked equipment, especially cannon, and were quickly overpowered by artillery fire. In the mass surrender which resulted, two generals were captured: R. S. Ewell and Custis Lee, son of General Robert E. Lee.