Statistics for occurrence #1 of “Rapidan rivers” in part 1.2, chapter 1.3 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 2: Two Years of Grim War.:

...at Lee, compelled to strengthen Jackson, would be too weak to fall upon the retiring Army of the Potomac. The Union army now occupied the great triangle formed roughly by the Rappahannock and the Rapidan rivers and the range of the Blue Ridge Mountains, with Culpeper Court House as the rallying point. Pope soon found that the capturing of New Madrid and Island No.10 was easy in comparison with measuring s...
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