I only fine a Seward in the 49th Alabama

Sixty-Third Alabama
Infantry Regiment
This regiment was organized at Blakeley, in July 1864, and nearly all of the men except two companies ("A'' and "B") were conscripts from various parts of the State, the officers being mostly veterans. The regiment remained in the defenses of Mobile till ordered to Spanish Fort, three days before the place was invested, March 1865. It was, with the Sixty-second, a part of Gen. Thomas' brigade, and lost several killed and wounded during the first six days' operations at Spanish Fort. Relieved, and sent to Blakeley, the Sixty-third arrived there in time to share in all the privations and perils of that siege. After some loss, it was captured with the fortress, April 9, 1865, about 300 in number, and exchanged just prior to the surrender of the department.

Field and Staff
Colonels -- Oland S. Rice; till re-organized. Junius A. Law of Macon; captured at Blakeley.

Lieut. Colonels -- Junius A. Law; promoted. John H. Echols of Macon; captured at Blakeley.

Majors -- John H. Echols; promoted. I. W. Suttle of Coosa; captured at Spanish Fort.

Adjutants -- David Johnston of Macon, (acting); captured at Blakeley.

The following were captains in the regiment:
James Armstrong, W. C. Zimmerman, Charles W. Martin, Alto V. Lee, Spottswood Garland, all captured at Blakeley; and I. W. Suttle, promoted, succeeded by ... Johnson, killed at Spanish Fort.
http://www.archives.state.al.us/referenc/alamilor/63rdinf.html

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James R. Seward, 4th Corporal, Company H*, 49th Alabama Infantry, enlisted January 9, 1862 at Vienna, Ala. by Capt. Wann for 12 months, captured at Port Hudson, July 9, 1863, recorded as Private, paroled at Demopolis, Alabama July 11, 1863, receipted for issues of clothing May 9, and at Macon, Ga. September 10, 1864, no further records

* Recruited from Madison County

M311: Compiled Service Records of Confederate Soldiers Who Served in Organizations from the State of Alabama

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Forty-Ninth Alabama
Infantry Regiment
This regiment was orgnized at Nashville, in January 1862, and attached to the Kentucky brigade of Gen. Breckinridge. It took part in the battleof Shiloh, where it lost 113 killed and wounded. A few weeks later, the Forty-ninth was sent to Vicksburg, with Breckinridge's brigade, and was engaged in the defence of the place when bombarded in 1862. Aug. 6, the regiment fought at Baton Rouge with a loss of 45 killed and wounded. Joining the army of Gen. Van Dorn, the Forty-ninth was engaged in the assault on Corinth, and suffered very severely there. Ordered to Port Hudson, the regiment passed the winter in that quarter, and was brigaded with the Twenty-seventh and Thirty-fifth Alabama, and two Mississippi regiments under Gen. Buford, who was soon succeeded by Gen. Beall. The Forty-ninth shared the dangers and hardships of the 42 days siege of Port Hudson, losing 55 men killed and wounded, and the reminder captured. Exchanged three months later, the Forty-ninth re-organized at Cahaba, and was attached to the brigade of Gen. Scott of Louisiana, with the Twelfh Louisiana, and Twenty-seventh, Thirty-fifth, Fifty-fifth, and Fifty-seventh Alabama regments. Joining the main army at Dalton, the brigade was assigned to Loring's division, Stewart's corps. Having wintered at Dalton, the Forty-ninth participated in the Dalton-Atlanta campaign, doing much arduous service, but losing inconsiderably. Around Atlanta it was again fully engaged, and suffered severely. It moved with Gen. Hood into Tennessee, and came out of the battles of Franklin, and Nashville with a long list of casualties, and captured men. Transferred to the Carolinas, the Forty-ninth took part in the operations there. Reduced to a skeleton, it was surrendered at Greensboro, N. C.
http://www.archives.state.al.us/referenc/alamilor/49thinf.html