Grant's new strategy was to march his 100,000-man army to the south, cross the James River, and seize the rail hub of Petersburg. This would cut off the supply lines to both Richmond and Lee, forcing the evacuation of the capital, and probably inducing Lee to attack Grant's army in a manner favorable to Grant's superior numbers and firepower. His plan required secrecy because his army would be vulnerable if intercepted while crossing the river and he sought to reach Petersburg before the city's defenses could be enhanced beyond the token force that was currently there. Therefore, on June 5 Grant ordered a cavalry raid by the command of Maj. Gen. Philip Sheridan northwest toward Charlottesville. The raid had two initial objectives. First, Sheridan would draw the Confederate cavalry away from Grant's main army so his infantry corps could stealthily disengage from Lee's army at Cold Harbor and move toward the James. Second, the Union cavalrymen would tear up the Virginia Central towards Richmond, cutting off Lee's army from the much needed food supplies produced by the Shenandoah Valley. Sheridan was ordered to destroy the railroad bridge on the Rivanna River, just east of Charlottesville, and destroy the tracks from there to Gordonsville. Then, his men would turn back and destroy the track all the way to Hanover Junction, near Richmond.