No sign of Shearer, but Company B, 13th Arkansas Infantry contained:

TENNISON, H.F. - CPT - POW discharged 26 Fe b1865 at New Madrid, MO.
FENNESSON, H.F. - CPT - Resigned 1 Nov 1862.
GAMBILL, JAMES R. - 2LT - Wounded at Chickamauga 19 Sep 1863. Died 5 Oct 1863.