The battery of Georgia militia light artillery commanded by Capt. William H. Pruden first appears in the Official Records in Serial#92, stationed near Augusta GA in the Dept of SC, GA, Fl. This was in December 1864. The next reference is in serial#99 of OR, in service in the Carolinas campaign, January 1865. Service near Macom GA followed in April 1865.
Cannot find references to any service in the Atlanta campaign. This battery was part of Maj Gen G. W. Smith's first division of the Georgia Militia.