Sunday, June 26, 1864
On Tuesday the Thirteenth New Hampshire Regiment began a march toward Petersburg to a new position on the right flank of General Ulysses Grant's line, abutting the Appomattox River. From this position the men of the Thirteenth viewed the activity at Fortress Monroe and at Hampton Roads. During the week the Thirteenth New Hampshire was hard at work building entrenchments along their line in extremely hot weather. The intense heat resulted in a sharp rise of the death count from gangrene in the camp hospitals.1
1S. Millett Thompson, Thirteenth Regiment of New Hampshire Volunteer Infantry in the War of the Rebellion, 1861-1865 : A Diary Covering Three Years and a Day (Boston, Massachusetts: Houghton, Mifflin and Company, 1888), 407-419.