Statistics for occurrence #1 of “Boonsboro” in chapter 23 of Brigadier-General Ellison Capers, Confederate Military History, a library of Confederate States Military History: Volume 5, South Carolina:

...el of the infantry of the legion, a battalion of eight companies, and after it was filled to a regiment, he was promoted colonel. He participated in the battles around Richmond, at Second Manassas, Boonsboro and Sharpsburg, Fredericksburg, and with Longstreet at Suffolk, Chickamauga, Bean's Station, Campbell's Station and Knoxville. His command was subsequently mounted as cavalry, and served on the nor...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Boonsboro (Maryland, United States) 743 54 41 0 0 user votes
Boonsboro (Virginia, United States) 38 0 0 0 0 user votes
Boonsboro (Maryland, United States) 0 0 0 0 0 user votes
Boonsboro (Missouri, 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.