Statistics for occurrence #1 of “Boonsboro” in chapter 33, page 618 of Maj. Jed. Hotchkiss, Confederate Military History, a library of Confederate States Military History: Volume 3, Virginia:

...and returned with it to participate in the attacks on Kilpatrick at Hagerstown and on Buford at Williamsport. During the campaign, he reported, his brigade fought in three battles and the affair at Boonsboro , and captured over 600 prisoners. Soon afterward an unfortunate break in his relations with General Stuart, which had existed since the fall of 1861, became so intensified as to have serious results....
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Boonsboro (Maryland, United States) 743 48 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.