After the survivors were exchanged and new recruits added, the regiment was reconstituted and fought at Raymond, Jackson, Chickamauga, Missionary Ridge, and Ringgold Gap in 1863.

In 1861, John Gregg, a district judge from Fairfield, Texas was appointed colonel with authority to raise an infantry regiment.

There were so few remaining men that they were temporarily consolidated with the 49th and 55th Tennessee Infantry Regiments, which were also captured at Fort Donelson.

William L. Moody, a businessman from Fairfield, became lieutenant colonel and Khleber M. Van Zandt, a lawyer from Marshall, became major.

[6] The Federals deployed two brigades and advanced into the dense vegetation bordering Fourteen Mile Creek.

[7] The Texans attacked the 20th Ohio Infantry and the Federal unit only held its ground because its division commander John A. Logan personally rallied it.

[6] A second Union division arrived on the field and the 7th Texas faced three Federal regiments before being compelled to withdraw.

The 7th Texas fought at the Battle of Chickamauga on 19–20 September, losing eight killed, 78 wounded, and one captured out of 177 men.

[1] Gregg's brigade, which formed part of Bushrod Johnson's division, suffered 109 killed, 474 wounded, and 18 missing, a total of 601 casualties.

[14] Before the Battle of Missionary Ridge on 25 November 1863, there was a reorganization that assigned the 7th Texas to James Argyle Smith's brigade in Patrick Cleburne's division.

Smith's brigade counted about 1,300 men and was deployed to defend Tunnel Hill at the northern end of Missionary Ridge.

[17] So many gunners from Swett's Mississippi Battery became casualties, that soldiers from the 7th Texas were detailed to man the guns.

Led by Granbury's Texans, the Confederates charged, capturing numerous Union soldiers and sweeping the survivors off Tunnel Hill.

Cleburne's division took a strong position at the gap in order to slow Federal pursuit of the Confederate army.

[1] At the Battle of Jonesborough on 1 September 1864, a Federal corps overran Daniel Govan's Arkansas brigade, capturing its commander and half of its soldiers.

Generals Cleburne and Granbury were both killed and the commanding officer of the 7th Texas, Captain Brown was captured.

[1] The regiment was assigned to Govan's brigade in John C. Brown's division of William J. Hardee's corps.