they might be withdrawn an hour or two after the brigade should
move. Extra reserves were assigned to them, and Major Hines put in
command of the whole detachment, with orders to keep in
communication with me at the extreme rear of the marching column. It
was interesting to observe the effect of this night movement upon
the men. Their imagination was excited by the novelty of the
situation, and they furnished abundant evidence that the unknown is
always, in such cases, the wonderful. The night had cleared off and
the stars were out. The Confederate position was eastward from us,
and as a bright star rose above the ridge on which the enemy was, we
could hear soldiers saying in a low tone to each other, "There goes
a fire balloon--it must be a signal--they must have discovered what
we are doing!" The exaggerated parallax at the horizon made the
rising star seem to move rapidly for the first few minutes, and men,
ignorant of this, naturally mistook its character. In a similar way
an occasional shot on the picket line would be the cause of a
subdued excitement. I doubt if soldiers ever make a night movement
in an enemy's presence without being under a nervous strain which
exaggerates the importance of everything they see and hear, and this
gives uncertainty and increases the difficulty of such duty. It is
no small part of the duty of officers, in such cases, to allay this
tendency to excitement, to explain the situation, and by a wise
mixture of information and discipline to keep the men intelligently
cool and in full command of their faculties.

General Rosecrans had gone with the head of the column, and had left
with me Major Slemmer, his inspector-general, to bring him word when
the rear of the column should be in march. Slemmer was the officer
who, as a lieutenant, had distinguished himself by holding Fort
Pickens in Pensacola harbor at the outbreak of the rebellion. He was