 The regiment went into camp at Brattleboro on September 25, 1862, and was mustered into United States service on October 4.It left Vermont on October 7, and arrived in Washington, D.C. on October 10, and went into camp on East Capital Hill.On October 30 it became part of the 2nd Vermont Brigade, which also included the 13th, 14th, 15th and 16th Vermont Infantry regiments.