The Romans do not, then, attempt to extend their front to equal that of a phalanx, and then charge directly upon it with their whole force: but some of their divisions are kept in reserve, while others join battle with the enemy at close quarters. Now, whether the phalanx in its charge drives its opponents from their ground, or is itself driven back, in either case its peculiar order is dislocated; for whether in following the retiring, or flying from the advancing enemy, they quit the rest of their forces: and when this takes place, the enemy’s reserves can occupy the space thus left, and the ground which the phalanx had just before been holding, and so no longer charge them face to face, but fall upon them on their flank and rear. If, then, it is easy to take precautions against the opportunities and peculiar advantages of the phalanx, but impossible to do so in the case of its disadvantages, must it not follow that in practice the difference between these two systems is enormous? Of course those generals who employ the phalanx must march over ground of every description, must pitch camps, occupy points of advantage, besiege, and be besieged, and meet with unexpected appearances of the enemy: for all these are part and parcel of war, and have an important and sometimes decisive influence on the ultimate victory. And in all these cases the Macedonian phalanx is difficult, and sometimes impossible to handle, because the men cannot act either in squads or separately. The Roman order on the other hand is flexible: for every Roman, once armed and on the field, is equally well equipped for every place, time, or appearance of the enemy. He is, moreover, quite ready and needs to make no change, whether he is required to fight in the main body, or in a detachment, or in a single maniple, or even by himself. Therefore, as the individual members of the Roman force are so much more serviceable, their plans are also much more often attended by success than those of others. I thought it necessary to discuss this subject at some length, because at the actual time of the occurrence many Greeks supposed when the Macedonians were beaten that it was incredible; and many will afterwards be at a loss to account for the inferiority of the phalanx to the Roman system of arming. [Sidenote: Prudent conduct of Philip.]