Thoreau was greatly opposed to military efforts such as the Mexican-American War but he was not inherently a pacifist. He believed it was in an individuals rights to choose not to support a war effort that they believed to be unjust. Therefore, it could be argued that he would support an individuals war efforts if the war was believed to be just and valued for the people, but if not then he would not support a soldiers service to the country through the military.
Since the question specifies a "different personal reaction" I would say that the answer is the second option "Drawn from thoughts, feelings that change from person to person" since those are "personal" experiences.
