To the above list might be added a long list of books on that branch of the engineer's art called _constructions_; but as this part of the profession is, in some degree, common both to the civil and military engineer, it is not deemed necessary to include works of this character in a list of books strictly military.] CHAPTER XV. MILITARY EDUCATION APPOINTMENT AND PROMOTION. With the Romans, six years' instruction was required to make a soldier; and so great importance did these ancient conquerors of the world attach to military education and discipline, that the very name of their army was derived from the verb _to practise._ Modern nations, learning from experience that military success depends more upon skill and discipline than upon numbers, have generally adopted the same rule as the Romans; and nearly all of the European powers have established military schools for the education of their officers and the instruction of their soldiers. France, which has long taken the lead in military science, has six military schools for the instruction of officers, containing in all more than one thousand pupils, and numerous division and regimental schools for the sub-officers and soldiers. Prussia maintains some twelve general schools for military education, which contain about three thousand pupils, and also numerous division, brigade, garrison, and company schools for practical instruction. Austria has some fifty military schools, which contain in all about four thousand pupils. Russia has thirty-five engineer and artillery technical schools, with about two thousand pupils; twenty-five military schools for the noblesse, containing eight thousand seven hundred pupils; _corps d'armee_ schools, with several thousand pupils; regimental schools, with eleven thousand pupils; and brigade-schools, with upwards of one hundred and fifty-six thousand scholars;--making in all about two hundred thousand pupils in her military schools! England has five military schools of instruction for officers, number of pupils not known; a military orphan school, with about twelve thousand pupils; and numerous depot and regimental schools of practice. The smaller European powers--Belgium, Sardinia, Naples, Spain, Portugal, Denmark, Sweden, Wurtemberg, Bavaria, Baden, have each several military schools, with a large number of pupils. It is seen from these statistics, that the European powers are not so negligent in educating their officers, and in instructing and disciplining their soldiers, as some in this country would have us believe.