Statistics for occurrence #1 of “Maryland heights” in chapter 19, page 433 of Joseph T. Derry , A. M. , Author of School History of the United States; Story of the Confederate War, etc., Confederate Military History, a library of Confederate States Military History: Volume 6, Georgia:

...xt="ptext" xmlns="http://www.w3.org/TR/xhtml1/strict"> the army of Northern Virginia, then on the march into Maryland. He had the hardest part of the work to do at the capture of Harper's Ferry and Maryland heights , being for the time under the command of Stonewall Jackson. After the fall of Harper's Ferry, he marched for Sharpsburg and reached the field just as Jackson and Hood were being forced back before ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Maryland Heights (Maryland, United States) 1,168 2 6 0 0 user votes
Maryland Heights (Missouri, United States) 28 0 0 0 0 user votes
Maryland Heights (Louisiana, United States) 15 0 1 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.