Gen. Taylor had all of his command in the field. According to Blessington, the only reserve troops were the Louisiana Militia commanded by Gov. Henry W. Allen. These were the men and boys too old or young to be in the army.
One of the areas I explore in my book is whether the Louisiana soldiers who were paroled at Vicksburg and Port Hudson broke their parole and fought in the Battle of Mansfield. For example, the 27th LA Inf., on parole from Vicksburg, had companies from Keatchie, Shreveport as well as Winn, Natchitoches and Bienville Parishes. It is unlikely that veterans who were able to fight would not do so when the enemy was in their front yard and their fathers and little brothers had gone off to fight if necessary with Gov. Allen. See page 262-63 The Defense of Vicksburg, A Louisiana Chronicle.