Article 2, Section 2, Clause 1 William Blackstone, Commentaries
1:2541765 II. The king is considered, in the next place, as the
generalissimo, or the first in military command, within the
kingdom. The great end of society is to protect the weakness of
individuals by the united strength of the community: and the
principle use of government is to direct that united strength in
the best and most effectual manner, to answer the end proposed.
Monarchical government is allowed to be the fittest of any for
this purpose: it follows therefore, from the very end of it's
institution, that in a monarchy the military power must be
trusted in the hands of the prince. Blackstone, William.
Commentaries on the Laws of England: A Facsimile of the First
Edition of 1765--1769. Chicago: University of Chicago Press,
1979. © 1987 by The University of Chicago