Statistics for occurrence #1 of “Fort Smith” in chapter 24 of Wiley Britton, Memoirs of the Rebellion on the Border 1863.:

...ns, and joined our forces in the vicinity of Fort Smith. He has for more than a year past, kept alive the Union cause in Northern Texas and Southwestern Arkansas. He was finally captured south of Fort Smith , and hung by the rebel authorities.
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Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
† Fort Smith (Arkansas, United States) 480 128 100 2 0 user votes
Fort Smith (Canada) 0 0 0 0 0 user votes
Fort Smith (Georgia, United States) 0 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.