Maxim LXIV
Nothing is so important in war as an undivided command; for this reason, when war is carried on against a single power, there should be only one army, acting upon one base, and conducted by one chief.
Note
“Success,” says the Archduke Charles, “is only to be obtained by simultaneous efforts, directed upon a given point, sustained with constancy, and executed with decision.” It rarely happens that any number of men who desire the same object are perfectly agreed as to the means of attaining it; and if the will of one individual is not allowed to predominate, there can be no ensemble in the execution of their operations; neither will they attain the end proposed. It is useless to confirm this maxim by examples. History abounds in them.
Prince Eugene and Marlborough would never have been so successful in the campaigns which they directed in concert, if a spirit of intrigue and difference of opinion had not constantly disorganized the armies opposed to them.