From the Richmond Daily Dispatch October 4 (or 3), 1862:
A military Politician.
–Among the latest arrivals of Yankee officers is Daniel Ullman, formerly the great gun of the Know Nothings of New York. He was operating on the line of the Rappahannock as Colonel of the 78th regiment New York volunteers, when, on the 28th of August, he had the misfortune to fall into the hands of our troops. Ullman’s personal appearance is insignificant; as a prisoner he has a desponding and downcast look. He will be sent home with his brother officers.
Maybe he was brooding on his revenge. According to the aboveWikipedia link, after his parole from the Richmond prison, Ullman approached President Lincoln about enlisting black soldiers. In January 1863 Ullman went to Louisiana and helped form the United States Colored Troops