Statistics for occurrence #1 of “McClernand” in chapter 4 of Adam Badeau, Military history of Ulysses S. Grant from April 1861 to April 1865. Volume 1:

...at the front. His exertions, however, were not confined to exhibitions of gallantry; his eminent qualities as a general, were never more conspicuous than in this battle. He, in reality, commanded McClernand 's division, as well as his own; for McClernand, who possessed both energy and courage, was a novice at soldiering, and with great good sense, sought and followed the advice of the man who was his jun...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
John A. McClernand 2,049 543 51 7 0 user votes
McClernand 941 0 155 0 0 user votes
J. A. McClernand 348 20 6 2 0 user votes
Jonathan A. McClernand 108 0 0 0 0 user votes
John Alexander McClernand 40 0 6 0 0 user votes
Generals McClernand 20 0 0 0 0 user votes
Geas McClernand 6 0 0 0 0 user votes
Gen McClernand 4 0 0 0 0 user votes
John McClernand 2 0 2 0 0 user votes
Gen John A. McClernand 1 0 1 0 0 user votes

† 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.