A year after the war's end, in April 1866, four women of Columbus gathered together to decorate the graves of the Confederate soldiers. They also felt moved to honor the Union soldiers buried there and to note the grief of their families, by decorating their graves as well. The story of their gesture of humanity and reconciliation is held by some writers as the inspiration of the original Memorial Day despite it occurring last among the claimed inspirations.
In April 1866, the Prussian representative in Florence signed a secret agreement with the Italian government, committing each state to assist the other in a war against Austria. The next day, the Prussian delegate to the Frankfurt assembly presented a plan calling for a national constitution, a directly elected national Diet, and universal suffrage.