Statistics for occurrence #1 of “Rush” in chapter 2 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 4: The Cavalry:

...e supplied with single-shot carbines, the decreased length and weight of the shorter arm being a decided advantage to a soldier on horseback. One volunteer regiment, the Sixth Pennsylvania Cavalry ( Rush 's Lancers), was armed with the lance in addition to the pistol, twelve carbines being afterwards added to the equipment of each troop for picket and scouting duty. But in May, 1863, all the lances ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Richard H. Rush 46 10 6 2 0 user votes
Benjamin Rush 45 0 7 0 0 user votes
Rush 42 0 26 0 0 user votes
Richard Rush 15 1 1 1 0 user votes
H. Y. Rush 8 0 0 0 0 user votes
W. P. Rush 7 0 1 0 0 user votes
Abraham C. Rush 6 0 0 0 0 user votes
J. C. Rush 6 0 0 0 0 user votes
P. D. Rush 3 0 1 0 0 user votes
C. Rush 2 0 0 0 0 user votes
D. G. Rush 2 0 0 0 0 user votes
G. W. Rush 2 0 0 0 0 user votes
George Rush 2 0 0 0 0 user votes
J. Rush 2 0 0 0 0 user votes
J. I. Rush 2 0 0 0 0 user votes
J. Murry Rush 2 0 0 0 0 user votes
J. P. Rush 2 0 0 0 0 user votes
J. S. Rush 2 0 0 0 0 user votes
James Rush 2 0 0 0 0 user votes
Margaret Rush 2 0 0 0 0 user votes
W. W. Rush 2 0 0 0 0 user votes
E. W. Rush 1 0 1 0 0 user votes
H. S. Rush 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.