The ordeal by battle is a stern test of the solid power of a nation. There must always be some great quality to produce great military superiority,--skill, or daring, or endurance, or numbers, or wealth, or all together. Except the first two, neither of these special qualifications has been even claimed by the Secessionists; and these two have been taken for granted with such superfluous boastfulness as to yield strong internal evidence against the claim. Certainly their general strategy, up to this moment, has yielded not a single evidence of far-sighted judgment or conscious power, while it has shown decided glimpses of weakness and indecision. Indeed, how can an army like theirs be strong? Its members mostly unaccustomed to steady exertion or precise organization; without mechanic skill or invention; without cash or credit; fettered in their movements by the limited rolling stock of their scanty railways; tethered to their own homes by the fear of insurrection;--what element of solid strength have they, to set against these things? In the present state of the world, strong in peace is strong in war. In modern times an army of heroes is useless without facilities for arming, transporting, and feeding it, to say nothing of the more ignoble circumstance of pay. Considerations of simple political economy render it almost impossible for a slaveholding army to be strong collectively, nor do the habits of Southern life usually fit its members to be strong singly. In remembering the Battle of New Orleans, we forget that the Southwest was then a region of hardy pioneers, such as are now rather to be sought for in Kansas and California. The famous Tennessee riflemen of that day were not necessarily slaveholders, and their legitimate descendants are yet to be found among the brave men who rally round the nearest approach to Andrew Jackson whom the State now boasts,--a tolerable fac-simile both as to character and etymology,--Andrew Johnson. There is no need of disparaging the personal courage of any man, and the Southern army has some good officers,--too good, probably, in spite of themselves, to bring to bear their clearest judgment and their best energies in striking down the flag they have all sworn to die for. They have eminent foreign advisers also, or one at least; for Mr. W.H. Russell, self-appointed plenipotentiary near the Court of St. Jefferson, is said to have lent the aid of his valuable military experience to that commanding officer so appropriately named Captain Bragg. But, Bragg or no brag, it is almost a moral impossibility that a slaveholding army should be strong.