Looks like he served alongside 3 brothers &/or cousins
Aaron Spain Co. C Private 25
Enlisted March 8, 1862 Booneville, Mississippi
May and June 1862 Present, in regimental hospital sick.
July and Aug. 1862 Absent, left at Graysville in hospital Aug.
28, 1862.
Nov. and Dec. 1862 Present.
Jan. and Feb. 1863 Absent, detailed as cook for Tullehoma
hospital Feb. 26.
March and April 1863 Present.
May and June 1863 Present.
July and Aug. 1863 Present.
Sept. and Oct. 1863 Absent, sent to hospital LaGranga, Ga.,
Oct. 15, 63.
Nov. and Dec. 1863 Absent, sent to hospital LaGrange, Ga.,
Oct. 15, 63 by order of surgeon.
Jan. and Feb. 1864 Present.
March and April 1864 Present.
Alexander Spain Co. C Private
Enlisted May 1, 1862 Corinth, Mississippi
May and June 1862 Present, sick at regimental hospital
commutation due 25.00.
July and Aug. 1862 Present.
Nov. and Dec. 1862 Present.
Jan. and Feb. 1863 Present.
March and April 1863 Present.
May and June 1.863 Present.
July and Aug. 1863 Present.
Sept. and Oct. 1863, Absent, wounded at Missionary Ridge, sent to
hospital Newman, Ga. Oct. 1, 1863.
Nov. and Dec. 1863 Absent, sent to hospital LaGrange, Ga. Oct.
1, 63, wounded.
Jan. and Feb. 1864 Absent, sent to hospital LaGrange, Ga. Oct.
1, 63, wounded by accident.
March and April 1864 Absent, sent to hospital LaGrange, Ga. Oct.
1, 63, wounded by accident.
Paroled at Greensboro, N C. May 1, 1865.
H.W. Spain Co. C Private
Enlisted May 1, 1862 Corinth, Mississippi
May and June 1862 Present, commutation due $25.00.
July and Aug. 1862 Present.
Nov. and Dec. 1862 Present.
Jan. and Feb. 1863 Present.
March and April 1863 Present.
May and June 1863 Present.
July and Aug. 1863 Present.
Sept. and Oct. 1863 Present.
Nov. and Dec. 1863 Present.
Jan. and Feb. 1864 Absent, furloughed to Miss. 26 days Feb. 15, 1864.
March and April 1864 Absent, furloughed to Miss. for 40 days, since
returned 5, March 1864.
Paroled at Greensboro, N.C. May 1, 1865.
James Spain Co. C Private 25
Enlisted March 8, 1862 Booneville, Mississippi
May and June 1862 Absent, wounded and left on the battlefield
May 27, 1862.
July and Aug. 1862 Absent, wounded at Corinth, left on the field,
in the hands of the enemy, April 27.
http://www.rootsweb.ancestry.com/~mscivilw/32mss-y.htm