This does not refer to intrenched camps, which make a great difference. They are treated of in [Article XXVII.]
It is a question here of positions of camps, and not of positions for battle. The latter will be treated of in the chapter devoted to Grand Tactics, ([Article XXX.])
ARTICLE XXI.
Zones and Lines of Operations.
A zone of operations is a certain fraction of the whole theater of war, which may be traversed by an army in the attainment of its object, whether it act singly or in concert with other and secondary armies. For example, in the plan of campaign of 1796, Italy was the zone of the right, Bavaria that of the center, Franconia that of the left army.