This map shows the area patrolled by the 5th NY Cavalry when they were assigned to the defense of Washington beginning September 1862. Some of the skirmish areas have been circled.
Sifton, Praed &amp; Company, Ltd. modified by TwoScarsUp
This is a portion of a 1912 map created by Sifton, Praed &amp; Co. that has been modified.  The entire map can be found in the Library of Congress <a rel="nofollow" class="external text" href="https://www.loc.gov/item/99448878/">map</a>, and shows Virginia and Maryland.