Statistics for occurrence #1 of “United States” in chapter 8 of D. H. Hill, Jr., Confederate Military History, a library of Confederate States Military History: Volume 4, North Carolina:

...s to the left of the Twentieth. Fifty skirmishers of the Fifth North Carolina soon encountered the Twenty-third Ohio, deployed as skirmishers under Lieut.-Col. R. B. Hayes (afterward President of the United States ), and the action began at 9 a. m. between Cox's division and Garland's brigade. Against Garland's 1,000 men, General Cox, of Reno's corps, led the brigades of Scammon and Crook, stated by Cox ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
United States (United States) 100,886 58 0 0 0 user votes
United States (New Mexico, United States) 6 0 0 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.