in ch.23, how do the prisoners act?which one seems to act as Henry would?

There are four prisoners described in this chapter. The first was mildly wounded, yet visibly distressed. Another was a young man who seemed to handle the terrible situation calmly. The third was an unflinching stoic. It is the fourth with whom I think Henry is most similar:

"The last of the four was always silent and, for the most part, kept his face turned in unmolested directions. From the views the youth received he seemed to be in a state of absolute dejection. Shame was upon him, and with it profound regret that he was, perhaps, no more to be counted in the ranks of his fellows. The youth could detect no expression that would allow him to believe that the other was giving a thought to his narrowed future, the pictured dungeons, perhaps, and starvations and brutalities, liable to the imagination. All to be seen was shame for captivity and regret for the right to antagonize."

This sort of complexity that the prisoner must bear in his own situation is very similar to Henry's.