Union General George B. McClellan, who led 100,000 men and moved as fast as an iceberg, attempted to capture the Confederate capital of Richmond in a series of six different battles along the Virginia Peninsula from June 25 to July 1, 1862). Confederate General Robert E. Lee drove back McClellan’s Union forces from a position 4 miles (6 km) east of the Confederate capital to a new base of operations at Harrison’s Landing on the James River.