 Four members from Company F of the Fourteenth Veteran Reserves conducted the execution of the four conspirators linked to the assassination of Abraham Lincoln on July 7, 1865, at Fort McNair in Washington, D.C.They knocked out the post that released the platform that hanged Mary Surratt, Lewis Powell, David Herold, and George Atzerodt.The Federal corps was mostly disbanded in 1866 following the close of the Civil War and the lessening of a need for reserve troops.