Statistics for occurrence #1 of “General Halleck” in chapter 14 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.:

... no military officer should give any orders, except through the chief of the construction corps, that would affect the operation of the road, and that all orders must come from either General Pope or General Halleck , except in case of attack on the road, in which case the officials of the road were to consult the commander of the nearest body of troops. By August 26th, it was evident that the railroad could ...
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