Who does the tattered soldier mistake Henry for in the book Red Badge of Courage?

The tattereed man mistakes Henry for a neighbor back home. The neighbor's name was Tom Jamison.

The tattered man looked at him in gaping amazement. "Why--why, pardner, where yeh goin'?" he asked unsteadily. The youth looking at him, could see that he, too, like that other one, was beginning to act dumb and animal-like. His thoughts seemed to be floundering about in his head. "Now--now--look--a--here, you Tom Jamison--now--I won't have this--this here won't do. Where--where yeh goin'?"