Statistics for occurrence #1 of “North Anna River” in chapter 147, page 302 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Condensed history of regiments.:

...movements of the campaign, the regiment shared with the 9th Corps in support of General Hancock's attack at Spotsylvania Court House May 12, taking part also in the assault on the 18th; and, crossing North Anna River May 24, as part of General Ledlie's Brigade, met the enemy near Ox Ford. It was engaged at Bethesda Church May 31 and at Cold Harbor June 3; participated in the movements of the following days, and...
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