Statistics for occurrence #1 of “McClernand” in chapter 5, page 57 of Historic leaves, volume 7, April, 1908 - January, 1909:

...act that the aspect of the Vicksburg campaign was constantly changing rendered co-operation between the two generals apparently impossible. The campaign of Vicksburg was at first under command of McClernand ; shortly after it was intended that Sherman should succeed him; but Grant finally, after several serious mistakes, not of his own, became the master. This affected the movements of Banks very serio...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
McClernand 941 4 155 2 0 user votes
John A. McClernand 2,049 0 51 0 0 user votes
J. A. McClernand 348 0 6 0 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.