http://www.colquitt.k12.ga.us/gspurloc/Cobbslegion/gasca/units/46th_gvi.htm
http://www.nps.gov/archive/vick/ga/ga46inf.htm

In addition to the 46th Georgia post already in this thread, the following are available on Col. Peyton H. Colquitt, who led the regiment until killed in action at Chickamauga --

http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GRid=8092571

A nice account of his death can be found in Christ in the Camp pp. 419-20. A Google search using the search argument -- "Peyton H. Colquitt" Chickamauga -- will produce this for you.