_principes_, when both these divisions, being thus united into one, renewed the conflict. If these, again, were routed and forced back, they retreated within the open ranks of the _triarii_, and all three divisions, forming into one, once more renewed the fight, in which, if they were overpowered, since they had no further means of recruiting their strength, they lost the battle. And because whenever this last division, of the _triarii_, had to be employed, the army was in jeopardy, there arose the proverb, “_Res redacta est ad triarios_,” equivalent to our expression of _playing a last stake_. The captains of our day, as they have abandoned all the other customs of antiquity, and pay no heed to any part of the ancient discipline, so also have discarded this method of disposing their men, though it was one of no small utility. For to insure the defeat of a commander who so arranges his forces as to be able thrice during an engagement to renew his strength, Fortune must thrice declare against him, and he must be matched with an adversary able three times over to defeat him; whereas he whose sole chance of success lies in his surviving the first onset, as is the case with all the armies of Christendom at the present day, may easily be vanquished, since any slight mishap, and the least failure in the steadiness of his men, may deprive him of victory. And what takes from our armies the capacity to renew their strength is, that provision is now no longer made for one division being received into the ranks of another, which happens because at present an army is arranged for battle in one or other of two imperfect methods. For either its divisions are placed side by side, so as to form a line of great width but of no depth or solidity; or if, to strengthen it, it be drawn up in columns after the fashion of the Roman armies, should the front line be broken, no provision having been made for its being received by the second, it is thrown into complete disorder, and both divisions fall to pieces. For if the front line be driven back, it jostles the second, if the second line endeavour to advance, the first stands in its way: and thus, the first driving against the second, and the second against the third, such confusion follows that often the most trifling accident will cause the ruin of an entire army.