June 25th - July 1st
In an effort to prevent an attack on Richmond, VA, Confederate General Robert E. Lee launched a series of engagements that became known as the Seven Days Campaign. Battles at Oak Grove, Gaine's Mills, Garnett's Farm, Golding's Farm, Savage's Station, White Oak Swamp, and finally Malvern Hill left more than 35,000 casualties on both sides. Despite losing the final assault at Malvern Hill, the Confederates succeeded in preventing the Union army from taking Richmond.
Source: en.wikipedia.org/wiki/Seven_Days_Battles
