The tactics of the Prussians can be best described in the words of Derrécagaix:
“In advancing to the attack, the Prussian divisions generally adopted, in this battle, a formation in three groups; the advanced-guard, the center and the reserve. In the 7th Division, for instance, the advanced-guard consisted of four battalions, four squadrons, one battery and one-half company of pioneers. The center, or main body, was composed of six battalions and one battery. In the reserve there were one and three-fourths battalions, two batteries and one and one-half companies of pioneers.
“These dispositions enabled them to launch against the first points assailed a succession of attacks, which soon gave a great numerical superiority to the assailants. This accounts for the rapidity with which the points of support fell into the hands of the Prussians. Their groups gained the first shelter by defiling behind the rising ground, and when a point was stubbornly defended, the artillery opened fire upon it, while the infantry sought to turn it by pushing forward on the flanks.”
On this point Hamley says: “When it is said that the Prussians are specially alive to the necessity of flank attacks, it is not to be supposed that the turning of the enemy’s line alone is meant; for that is a matter for the direction of the commanding general, and concerns only a fraction of the troops engaged. The common application lies in the attack of all occupied ground which is wholly or in part disconnected from the general line, such as advanced posts, hamlets, farm buildings, woods, or parts of a position which project bastion-like, and are weakly defended in flank.”
The Prussians seem, in almost every case, to have advanced to the attack in company columns, supported by half-battalion columns, or even by battalions formed in double column on the center. Though the columns were preceded by skirmishers, the latter seem to have played only the comparatively unimportant part of feeling and developing the enemy; and the present system by which a battle is begun, continued and ended, by a constantly reinforced skirmish line, was not yet dreamed of. It is remarkable that, after witnessing the destructive effects of the needle gun upon their adversaries, the Prussians should have retained their old attack formation, until, four years later, the thickly strewn corpses of the Prussian Guards at St. Privat gave a ghastly warning that the time had come for a change.
It is interesting to compare the tactical features of the campaign of 1866 with those of our own war. The necessity of launching upon the points assailed a succession of attacks was recognized in the tactical disposition frequently made, during the War of Secession, in which the assaulting divisions were drawn up in three lines of brigades, at distances of about 150 yards, the leading brigade being preceded by one, or sometimes two, lines of skirmishers.[17] The skirmishers being reinforced by, and absorbed in, the first line, the latter, if checked, being reinforced and pushed forward by the second, and the third line being similarly absorbed, the assaulting force, at the moment of collision, generally consisted of all the successive lines merged into one dense line. This formation was the outgrowth of bitter experience in attacking in column, though the attack with battalions ployed in close column had not altogether disappeared in 1864.[18] In comparison with the beautiful tactics by which the Germans now attack, with a firing line constantly reinforced from supports and reserves kept in small columns for the double purpose of obtaining the greatest possible combination of mobility and shelter, the attack formation used in the Civil War seems far from perfect; but it was certainly superior to the Prussian attack formation of 1866, for it recognized the hopelessness of attacks in column, and provided for the successive reinforcement of an attacking line. General Sherman, in describing the tactics in use in his campaigns, says: “The men generally fought in strong skirmish lines, taking advantage of the shape of the ground, and of every cover.” Dispositions being, of course, made for the constant reinforcement of these lines, we find Sherman’s army habitually using tactics embracing the essential features of the German tactics of the present day.[19]
The Austrian infantry tactics possessed the double attribute of antiquity and imbecility. Major Adams, of the Royal Military and Staff Colleges, says: “Since the Italian war, when Napoleon III. declared that ‘arms of precision were dangerous only at a distance,’ it had been the endeavor of Austria to imitate the tactics to which she attributed her own defeat. If the uniform success of the French in 1859 had established the trustworthiness of the Emperor’s theory, how much more necessary must it now be to arrive at close quarters, where precision was accompanied by unusual rapidity of fire? The more recent experiences of the American war would seem indeed to have excited but little interest in Austria. Could it really be reasonably expected that Austrian soldiers should effect what American generals had long discarded as no longer to be attained? The advocacy of the bayonet, so loudly proclaimed in Austrian circles, would surely have elicited a contemptuous smile from the veterans of the Army of the Potomac. During three years of war, but 143 cases of bayonet wounds were treated in the northern hospitals; of these, but two-thirds were received in action, and six only proved eventually fatal. How, then, could it be imagined that tactics, which had already failed against the common rifle, ... should now prevail against the Prussian breech-loaders? The manner in which these naked Austrian battalions were ignorantly flung against the murderous fire of the enemy soon produced results which every novice in the art of war will readily appreciate. Even under cover the dread of the Prussian weapon became such that, as the enemy approached, the Austrian infantry either broke or surrendered.”
The important aid that the Austrians might have derived from hasty entrenchments has already been pointed out.[20] In not one single instance did they make use of such shelter-trenches or breastworks as were habitually used by the American armies, though the theater of war offered the best of opportunities for the quick construction and valuable use of such works. Such attempts at the construction of entrenchments as were made, savor more of the days of Napoleon than of the era of arms of precision. But the Austrians were not alone in their neglect to profit by American experience in this respect. It was not until Osman Pasha showed on European soil the value of hasty entrenchments, that European military men generally took note of a lesson of war that they might have learned thirteen years earlier.[21]