June 4, 1864. Ireland´s (3d) Brigade, Geary´s (2d) div., 20th A. C., [US] seized, repaired & held Mason´s Bridge, which had been wrecked by Confederate forces retreating eastward.
June 6. The Army of the Cumberland, [US] commanded by Maj. Gen. George H. Thomas crossed Allatoona Creek here, enroute from Dallas - New Hope front in Paulding County to Kennesaw Mtn. environs.
The Cumberland Army consisted of three Corps: 4th, 14th & 20th, which formed the center of Sherman´s forces during the twenty-nine days of conflict -- June 5, July 3 -- in Cobb County
033-29 GEORGIA HISTORICAL COMMISSION 1953
Plaque courtesy Lat34North.com.
Original page, with additional info, here.
Photo credit: Byron Hooks of Lat34North.com.