3 entries match your criteria. Related Historical MarkersFollow Stainrook's Brigade by tablets and monuments. By Brian Scott, September 19, 2015 Twelfth Army Corps Marker SHOWN IN SOURCE-SPECIFIED ORDER1► Maryland (Washington County), Sharpsburg — 49 — Twelfth Army Corps — Stainrook's Brigade, Greene's Division — On Smoketown Road at Mansfield Monument Road, on the right when traveling south on Smoketown Road. 2► Maryland (Washington County), Sharpsburg — 52 — Twelfth Army Corps — Stainrook's Brigade, Green's Division — On Dunker Church Road / Old Hagerstown Pike, on the right when traveling north. 3► Maryland (Washington County), Sharpsburg — 3rd Maryland Volunteer Infantry — On Dunker Church Road / Old Hagerstown Pike, on the right when traveling north.