Who led the confederate force and was able to defeat the union at the siege of petersburg?

The Confederate forces at the Siege of Petersburg were led by General Robert E. Lee. Despite facing overwhelming Union numbers and resources, Lee's strategic defensive tactics initially held off Union General Ulysses S. Grant's forces for several months. However, the eventual Union breakthrough in April 1865 led to the fall of Petersburg and subsequently the surrender of Lee's army at Appomattox Court House.