Statistics for occurrence #1 of “Matamoras” in chapter 1 of General James Longstreet, From Manassas to Appomattox:

...ates increased as the suspense continued. But the authorities, having confidence in their negotiations or wishing to precipitate matters, ordered General Taylor to march across to the Rio Grande at Matamoras in the spring of 1846. The execution of the order precipitated war. The move from Corpus Christi to the Rio Grande made necessary a change of base from St. Joseph's Island to Point Isabel and ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Matamoras (Pennsylvania, United States) 327 16 1 0 0 user votes
Matamoras (Indiana, United States) 379 0 1 0 0 user votes
Matamoras (Ohio, United States) 178 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.