Statistics for occurrence #1 of “Major-General McClellan” in chapter 16 of Historic leaves, volume 1, April, 1902 - January, 1903:

...nd in August, 1862, this regiment passed up the valley, and was in the battle of Cedar Mountain, Va., and in the second Bull Run fight, August, 1862, and was attached to General Pope's army, and with Major-General McClellan 's army in the Forced March to Maryland to intercept Lees army and relieve Harper's Ferry, which was besieged by Major-General A. P. Hill's corps. The surrender of Harper's Ferry took place Septembe...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.