Statistics for occurrence #1 of “Major Duane” in chapter 12 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 5: Forts and Artillery.:

...ederate entrenchments at Cold Harbor. But the Federals were baffled in their attempts to drive the Confederates across the Chickahominy. Colonel Michler, with his officers, was directed to assist Major Duane , chief engineer of the Army of the Potomac, in making a reconnaissance of the Confederate positions to ascertain their strength. Never were two lines of battle more closely arrayed. At places the...
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