It is not improbable that Grant might have made more headway by leaving a sufficient part of his army in the trenches in front of Petersburg and by moving with a heavy force far to the west upon Lee's communications; or, if it were determined to capture the place _à main forte_, by making a massed attack upon some point in the center after suitable mining operations had weakened Lee's defenses and prepared for such an operation. But the end was to come with opening spring. To the far-sighted, this was no longer doubtful. The South must succumb to the greater material resources of the North, despite its courage and its sacrifices.--_Colonel T. A. Dodge, U. S. A., in "A Bird's-Eye View of Our Civil War."_ During the winter of 1864-65, General Lee, fighting Grant without, was fighting famine within. The shivering, half-clad soldiers of the South crouched over feeble fires in their entrenchments. The men were exposed to the rain, snow, and sleet; sickness and disease soon added their horrors to the desolation. The finances of the Government were almost gone. The life of the Confederacy was ebbing fast. Behind Union breastworks, early in 1865, General Grant was making preparations for the opening of a determined campaign with the coming of spring. Mile after mile had been added to his entrenchments, and they now extended to Hatcher's Run on the left. The Confederate lines had been stretched until they were so thin that there was constant danger of breaking. A. P. Hill was posted on the right; Gordon and Anderson held the center, and Longstreet was on the left. Union troops were mobilizing in front of Petersburg. By February 1st, Sherman was fairly off from Savannah on his northward march to join Grant. He was weak in cavalry and Grant determined to bring Sheridan from the Shenandoah, whence the bulk of Early's forces had been withdrawn, and send him to assist Sherman. Sheridan left Winchester February 27th, wreaking much destruction as he advanced, but circumstances compelled him to seek a new base at White House. On March 27th he formed a junction with the armies of the Potomac and the James. Such were the happenings that prompted Lee to prepare for the evacuation of Petersburg. And he might be able, in his rapid marches, to outdistance Grant, join his forces with those of Johnston, fall on Sherman, destroy one wing of the Union army and arouse the hopes of his soldiers, and prolong the life of his Government. General Grant knew the condition of Lee's army and, with the unerring instinct of a military leader, surmised what the plan of the Southern general must be. He decided to move on the left, destroy both the Danville and South Side railroads, and put his army in better condition to pursue. The move was ordered for March 29th.