• The natural formation of the country is the soldier's best ally; but a power of estimating the adversary, of controlling the forces of victory, and of shrewdly calculating difficulties, dangers and distances, constitutes the test of a great general.

    Sun Tzu: The natural formation of the country is the soldier's best ally;  but a power of estimating the adversary,  of controlling the forces of victory,  and of shrewdly calculating difficulties, dangers and distances,  constitutes the test of a great general.
    Sun Tzu, Julius Caesar, Einhard, Niccolò Machiavelli, Carl von Clausewitz (2016). “Strategy Six Pack”, p.23, Lulu.com