OCTOBER 23D.—The President is highly delighted at the result of the battle of Leesburg; and yet some of the red-tape West Point gentry are indignant at Gen. Evans for not obeying orders, and falling back. There is some talk of a court-martial; for it is maintained that no commander, according to strict military rules, should have offered battle against such superior numbers. They may disgrace Gen. Evans; but I trust our soldiers will repeat the experiment on every similar occasion.