Statistics for occurrence #1 of “Fortress Monroe” in chapter 7, page 247 of Benjamnin F. Butler, Butler's Book: Autobiography and Personal Reminiscences of Major-General Benjamin Butler:

... Fortress Monroe
1. A Water Battery. 2. Second Front for Rampart. 3. Commanding Officers' Headquarters.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Fortress Monroe (Virginia, United States) 7,630 358 276 8 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.