The 102nd New York Regiment did fight in the Atlanta Campaign under Sherman in 1864. It served in the 3rd Brigade of the 2nd Division, XX Corps under Joseph Hooker. Previously, it had formed part of the XII Corps and fought at such engagements as Antietam, Chancellorsville, and Gettysburg. However, no Colonel Thaddius Riker ever commanded the regiment. The colonels in command during the Atlanta Campaign were Col. James C. Lane and Col. Herbert von Hammerstein.