After the Civil War, de Peyster was elected as a 3rd Class Companion of the Military Order of the Loyal Legion of the United States in recognition of his efforts to support the Union during the war.
"The hero at Oak Ridge was John Buford .. he not only showed the rarest tenacity, but his personal capacity made his cavalry accomplish marvels, and rival infantry in their steadfastness .. Glorious John Buford!" Gen. de Payster on Buford's Dragoon Tactics[REF] .