IT is plain to me out of the events of the war, north and south, and out of all considerations, that the current military theory, practice, rules and organization, (adopted from Europe from the feudal institutes, with, of course, the modern improvements, largely from the French,) though tacitly followd, and believd in by the officers generally, are not at all consonant with the United States, nor our people, nor our days. What it will be I know notbut I know that as entire an abnegation of the present military system, and the naval too, and a building up from radically different root-bases and centres appropriate to us, must eventually result, as that our political system has resulted and become establishd, different from feudal Europe, and built up on itself from original, perennial, democratic premises. We have undoubtedly in the United States the greatest military poweran exhaustless, intelligent, brave and reliable rank and filein the world, any land, perhaps all lands. The problem is to organize this in the manner fully appropriate to it, to the principles of the republic, and to get the best service out of it. In the present struggle, as already seen and reviewd, probably three-fourths of the losses, men, lives, &c., have been sheer superfluity, extravagance, waste.