Complex sentence: Wirz was arrested by a contingent of the 4th U.S. Cavalry on May 7,1865 in Andersonville, taken first to Macon, Georgia, and then by rail to Washington, D.C., arriving there on May 10,1865.
Split into simpler sentences: Wirz was arrested by a contingent of the 4th U.S. Cavalry on May 7,1865, in Andersonville. He was taken first to Macon, Georgia and then by rail to Washington, D.C., arriving there on May 10,1865.