After the Confederates retreated from Atlanta, the regiment was part of a force that made an unsuccessful attack against a Union garrison during the Battle of Allatoona on October 5.

After Franklin, the regiment was detached from the rest of the army to build fortifications, missing the Battle of Nashville.

In January 1864, the brigade returned to Alabama, but was sent back to Meridian on February 5 due to the threat posed by the Union forces of Major General William T. Sherman.

At the beginning of the Atlanta campaign, the regiment mustered 560 men, making it the largest unit in its brigade.

[4] On June 27, the First Missouri Brigade, commanded by Brigadier General Francis M. Cockrell, defended a portion of the Confederate line at a point known as Pigeon Hill.

The right flank of the skirmish line was later ordered to fall back, suffering heavy losses in the retreat.

[7] Despite having won the battle, Confederate General Joseph E. Johnston ordered a retreat from Kennesaw Mountain.

[3] The 2nd and 6th Missouri Infantry was left to defend the Atlanta fortifications during the July 28 Battle of Ezra Church, and missed a bloody Confederate defeat.

[13] The Confederate positions at Lovejoy's Station were rather weak and were subjected to enfilade fire from Union artillery.

[15] In October, General John Bell Hood, commander of the Army of Tennessee, sent French's division against a Union outpost at Allatoona, Georgia.

Eventually, Union reinforcements threatened to cut French's line of retreat, and the Confederates fell back from the field.

[19] Once the charge hit the Union line, a portion of the brigade was crowded behind Major General John C. Brown's division as the Confederate attacked a farm owned by the Carter family.

[23] The regiment did not rejoin the rest of the Army of Tennessee until January 1865, missing the Battle of Nashville.