War is a serious game in which a man risks his reputation, his troops, and his country. A sensible man will search himself to know whether or not he is fitted for the trade.
In war, the general alone can judge of certain arrangements. It depends on him alone to conquer difficulties by his own superior talents and resolution.
Valor is a gift. Those having it never know for sure whether they have it till the test comes. And those having it in one test never know for sure if they will have it when the next test comes.