That contrary to the vulgar opinion, Money is not the Sinews of War.
maintain, therefore, that it is not gold, as is vulgarly supposed, that is the sinews of war, but good soldiers; or while gold by itself will not gain you good soldiers, good soldiers may readily get you gold. Had the Romans chosen to make war with gold rather than with iron all the treasures of the earth would not have sufficed them having regard to the greatness of their enterprises and the difficulties they had to overcome in carrying them out. But making their wars with iron they never felt any want of gold; for those who stood in fear of them brought gold into their camp.
For in that passage of his history wherein he discusses whether if Alexander the Great had invaded Italy, he would have succeeded in vanquishing the Romans, three things are noted by him as essential to success in war; to wit, many and good soldiers, prudent captains, and favourable fortune; and after examining whether the Romans or Alexander would have had the advantage in each of these three particulars, he arrives at his conclusion without any mention of money.
The Campanians, therefore, when asked by the Sidicinians to arm in their behalf, must have measured their strength by wealth and not by soldiers; for after declaring in their favour and suffering two defeats, to save themselves they were obliged to become tributary to Rome.
~Niccolo Machiavelli
Sun Tzu said: The art of war is of vital importance
to the State.
It is a matter of life and death, a road either to safety or to ruin. Hence it is a subject of inquiry which can on no account be neglected.

The art of war, then, is governed by five constant factors, to be taken into account in one's deliberations, when seeking to determine the conditions obtaining in the field.

These are: The Moral Law; Heaven; Earth;
The Commander;Method and discipline.

The Moral Law causes the people to be in complete
accord with their ruler, so that they will follow him
regardless of their lives, undismayed by any danger.

Heaven signifies night and day, cold and heat,
times and seasons.

Earth comprises distances, great and small;
danger and security; open ground and narrow passes;
the chances of life and death.

The Commander stands for the virtues of wisdom,
sincerely, benevolence, courage and strictness.

By method and discipline are to be understood
the marshaling of the army in its proper subdivisions,
the graduations of rank among the officers, the maintenance of roads by which supplies may reach the army, and the control of military expenditure.

These five heads should be familiar to every general:
he who knows them will be victorious; he who knows them not will fail.

~Sun Tzu

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