Walt Whitman's writing was profoundly influenced by the emotional turmoil of the Civil War. The conflict exposed him to the harsh realities of human suffering and mortality, shaping his outlook on life and the American experience. In works like "Drum-Taps," Whitman adopted a more realistic tone, depicting the brutality and heroism surrounding war. His poetry became a means to connect with both soldiers and civilians, emphasizing themes of unity and compassion. The tragedy of the Civil War made him a voice for a divided nation, reflecting his belief in the potential for healing and understanding through shared experiences.