Statistics for occurrence #1 of “Opequon, Va.” in chapter 26, page 180 of Thomas Wentworth Higginson, Massachusetts in the Army and Navy during the war of 1861-1865, vol. 1, Condensed history of regiments.:

... at Gaines' Mill, Va., June 27, 1862; Malvern Hill, Va.; Fredericksburg, Va., 2 wounded; Franklin's Crossing, June 5, 1863; Gettysburg, Pa.; Mine Run, Va.; Spotsylvania (Laurel Hill), Va., 2 wounded; Opequon, Va. , 4 wounded; Fisher's Hill, Va., 1 wounded. The First Battery Massachusetts Light Artillery was recruited in Boston during August of 1861, largely from the old Boston Light Artillery, or Cook's Ba...
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