Afterwards the battalion, that lost 14 dead and 57 wounded at Shiloh, was consolidated with the "Confederate (Louisiana) Guards Response Battalion" under overall command of Major William Clack. The consolidation proved to be only temporary as the Guards Battalion was transferred in August 1861. Going north in the Confederate Heartland Offensive the 1st Battalion fought in the Battle of Perryville, suffering 12 dead, 54 wounded and 6 missing from a total of 167 men. The depleted battalion was consolidated with the 3rd (Miller's) Florida Battalion. Miller's 6 companies and the veterans of the 1st Battalion were reorganized as 1st Florida Infantry Regiment again. William Miller was elected Colonel, McDonell became lieutenant colonel and Glover A. Ball became major. In December 1862 the regiment, now part of the brigade of Brigadier William Preston, was loosely paired with the 3rd Florida Infantry, under the overall command of Miller. The 531 men of the 1st and 3rd Regiments fought distinctively at Stones River, taking high losses including Colonel Miller, who was wounded on the last day of the battle. Overall command then went to Colonel William S. Dilworth of the 3rd Florida. Due to the casualties both regiments took before, this consolidation became permanent; Dilworth stayed in command for the rest of the war while Miller commanded reserve forces (becoming a brigadier general in 1864).