Statistics for occurrence #1 of “Poolesville” in chapter 11, page 140 of Brig.-Gen. Bradley T. Johnson, Confederate Military History, a library of Confederate States Military History: Volume 2.1, Maryland:

...ord, Brandy Station, Auburn or Cedar Creek, Buckland, Gainesville, Taylorsville, Pollard's Farm, Old Church, Beaver Dam, Dabney's Ferry, Ashland, Trevilian's Station, Leetown, Bladensburg, Rockville, Poolesville , Gettysburg, Martinsburg, Charlestown, Bunker Hill, Fisher's Hill, Madison C. H., Liberty Mills, High Bridge, Appomattox.
...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Poolesville (Maryland, United States) 520 12 90 0 0 user votes
Poolesville (Virginia, 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.