Statistics for occurrence #1 of “Heintzelman” in chapter 14 of William Swinton, Campaigns of the Army of the Potomac:

... by the Confederates, 107; criticism upon McClellan's operations, 108; Magruder's small force, and McClellan's delay of assault, 109; arrival of part of McDowell's corps during siege, 109; McClellan, Heintzelman , and Barnard's opinion on immediate assault, 110; to the Chickahominy, 112.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Heintzelman 854 64 138 8 0 user votes
S. P. Heintzelman 835 0 21 0 0 user votes
Samuel P. Heintzelman 366 0 12 0 0 user votes
S. V. Heintzelman 120 0 0 0 0 user votes
Mary L. Heintzelman 18 0 0 0 0 user votes
Rush B. Heintzelman 8 0 0 0 0 user votes
Samuel Peter Heintzelman 8 0 2 0 0 user votes
Mish T. Heintzelman 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.