What 2 battle did lee lose while trying to protect Richmond?

During the Civil War, General Robert E. Lee lost the Battles of Gettysburg in July 1863 and the Battle of Cold Harbor in June 1864 while attempting to protect Richmond, Virginia. The defeat at Gettysburg marked a significant turning point in the war, as it halted Lee's invasion of the North. At Cold Harbor, Lee's forces faced a devastating Union assault, leading to heavy Confederate casualties. Both losses weakened Lee's position and ultimately contributed to the fall of Richmond in 1865.