Statistics for occurrence #1 of “Fortress Monroe” in article 9 of The Daily Dispatch: may 18, 1861., [Electronic resource]:

...high up as Yorktown, on York River. With that line occupied by ten thousand or fifteen thousand rebel troops a very important step will have been taken in a comprehensive plan for the investment of Fortress Monroe . With that line occupied by Federal troops, a rope would be round Virginia's neck. It would command her completely on the seaboard side, stop communication between Norfolk and Richmond by James R...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Fortress Monroe (Virginia, United States) 7,630 14 276 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.