Statistics for occurrence #1 of “United States” in chapter 7 of Historic leaves, volume 4, April, 1905 - January, 1906:

...d to the business of inducing men to enlist in the Thirteenth Maine Regiment, which was to be attached to General Butler's division for special service,—until the regiment was mustered into the United States service at the arsenal in Augusta,—December 31, 1861. Here we lived in tents half buried in snow, often drilling in snow knee deep, with the mercury at or below zero, till February 18, 1862, ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
United States (United States) 100,886 16 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.