and Eighteenth
Illinois moved out to the left of Crittenden when he diverged from
Nelson, and the Seventh Iowa, moved into the front line later in the
day.

The number of Johnston's army has already been given as 40,000 men.
Badeau says the effective force present in the National camps Sunday
morning was 33,000 men. General Sherman makes the number 32,000. William
Preston Johnston, in the Life of his father, makes the number of the
National troops, the "grand total in Sunday's battle," 41,543. These
various statements arise from the different ways of making and reading
returns. Forty thousand does not represent the total force which A.S.
Johnston led to Shiloh. Forty thousand "present for duty" is exclusive
not only of the brigade of detailed teamsters and cooks that General
Johnston complained of, but of all regular and permanent details. It
appears from some reports which give numbers, that it was also exclusive
of temporary details made for the occasion of the battle--hospital men,
train guards, ammunition guards, sappers and miners, infantry detailed
to act with batteries, etc. It appears from some of the reports, which
state numbers, that the "enlisted men" "present for duty," in the "Field
Returns of the Confederate Forces that marched from Corinth to the
Tennessee River," comprised only non-commissioned officers and privates,
and was therefore exclusive of musicians, buglers, artificers, etc.,
though enlisted as such. The 40,000, therefore, is the number of the
combatants engaged in the battle. The field return is susceptible of
further explanations, the character of which does not appear. The field
return, for example, gives the "present for duty," in the artillery in
Polk's corps, as 20 officers and 331 enlisted men--351 in all; while the
official report of the chief of artillery of the corps, of casualties in
the battle, giving each battery separately, states the number actually
engaged in the battle as 21 officers, 56 non-commissioned officers, and
369 privates, making a total of 446. It is clear, therefore, that the
40,000 is intended as the number of officers, non-commissioned officers,
and privates actually engaged in the battle, and a comparison of the
reports of General Polk's chief of artillery with the returns suggests
that in some way it may not be the full number of combatants engaged.

The aggregation of returns making 41,153 present for duty in Grant's
army at Pittsburg Landing, Sunday morning, is