From May 31-June 12, 1864, more than 160,000 men clashed at Cold Harbor, Virginia, during the Wilderness Campaign. The 2nd, 5th, 6th, 7th and 36th Wisconsin Infantry regiments took part. On June 7, the Iron Brigade regiments were moved to a position on the Union line where they were less exposed to enemy fire. "Our spirits rise wonderfully," reported Col. Rufus Dawes. "It is impossible for one who has not undergone it, to fully understand the depression of spirits caused by such long, continued, and bloody fighting and work… We are having the first quiet day for more than a month."