The location of Ft Buffalo is documented in the map on the back of the NPS pamphlet for Fort Marcy, but the fort is gone. I just drove over its location about three hours ago, and that entire area is historically compromised. Northern Virginia and all.
Pine River Boys, Co I, 7th Wisconsin
"We're... Christians, what read the Bible and foller what it says about lovin' your enemies and carin' for them what despitefully use you -- that is, after you've downed 'em good and hard."
-Si Klegg and His Pard Shorty