The Mississippi 39th Infantry Regiment was organized at Jackson, Mississippi, during the late spring of 1862. About twenty-five percent of this unit was sick in June, and there were 29 officers and 541 men present for duty in July. Company I took part in the fight at Baton Rouge, then, assigned to General Beall's command, the regiment was captured at Port Hudson in July, 1863. After the exchange in December it totalled 220 effectives. Attached to Ross' and Sears' Brigade it was involved in the Atlanta Campaign, Hood's Tennessee operations, and the defense of Mobile. The regiment reported 7 casualties at New Hope Church, 30 at Kennesaw Mountain, 5 at the Chattahoochee River, and 48 in the Battle of Atlanta. Few surrendered with the Department of Alabama, Mississippi, and East Louisiana.

The 29th Mississippi Infantry Regiment 29th Infantry Regiment was organized at Corinth, Mississippi, in April, 1862 with men from Grenada, Lafayette, Panola, Yalobusha, Washington, and De Soto counties. The unit served in Mississippi, then moved to Kentucky where it saw action in Munfordville. Later it joined the Army of Tennessee and was placed in General Walthall's and Brantly's Brigade where it participated in many battles from Murfreesboro to Bentonville. The 29th lost 5 killed and 36 wounded at Munfordville, had 34 killed and 202 wounded at Murfreesboro, and suffered fifty-three percent disabled of the 364 engaged at Chickamauga. It reported 191 casualties at Chattanooga and in December, 1863 was consolidated with the 30th and 34th Regiment and totalled 554 men and 339 arms. This unit reported 5 killed and 22 wounded at Resaca, and in the fight at Ezra Church the 29th/30th lost 8 killed and 20 wounded. Very few surrendered in North Carolina in April, 1865.

The Mississippi 4th Infantry Regiment was organized at Grenada as the Fourth Regiment, Second Brigade, Army of Mississippi, and enlisted for twelve months. The Fourth was among the troops posted at Fort Henry on the Tennessee River, under General Lloyd Tilghman. The troops were transferred to Fort Donelson and there captured. Following exchange they were then surrendered at Vicksburg and continued throughout the remainder of the war in the Atlanta Campaign, Franklin, and Nashville, ending the war in the defense of Mobile.