Walt Whitman experienced first-hand the ravages of the Civil War as a volunteer nurse in the hospitals of Washington D.C. During that time, he filled notebooks with ?impromptu jottings that became the basis of two works: Drum-Taps, a collection of 71 poems including
When Lilacs Last in the Dooryard Bloomd and O Captain My Captain, and Memoranda During the War, an intimate diary of his experience tending to the sick and dying during the war.