Thus we have here the German united attack, on the one hand, and the French group attack, on the other. Since group tactics no doubt diminish losses, they should be used in delaying actions, in holding attacks, and in defense; they should unquestionably not be employed when a concerted, rapid movement of skirmishers to the front becomes necessary. How should the Vth Corps at Wörth and the Guard at St. Privat, for instance, have attacked, according to the French regulations? VI. MACHINE GUNS.[273] [273] _Exerzierreglement und Schieszvorschrift für die Maschinengewehrabteilungen_, 1904. Captain BRAUN, _Das Maxim-Maschinengewehr und seine Verwendung_, Berlin, 1905. 1. DEVELOPMENT OF THE ARM. The effect of canister had decreased considerably with the introduction of rifled guns, and this was the more noticeable, because, simultaneously therewith, the accuracy and rate of fire of the infantry rifle was greatly increased. The attempts to re-invest the artillery with its one-time superiority were directed in two channels: one aimed at perfecting shrapnel, which had been rather neglected up to this time (England, Prussia, Austria), while the other resurrected the mediaeval idea of the “barrel-organ gun,” with a view of assembling a number of rifle barrels and of combining thereby the accuracy of the small arm with the moral effect of canister. Thus, among others, the 4-10 barreled _Gatling_ gun was invented in America in 1861, it being the oldest representative of this type of weapon. In order to obtain a weapon matching the Prussian _needle_ gun, Bavaria adopted the 4 barreled _Feldl_ gun and France the 25 barreled _mitrailleuse_.[274] The name _canon à balles_, which was given the gun, sufficed to indicate the manner in which it was intended to be used. As these guns frequently failed in action, offered the same target and required the same equipment and approximately the same road space as field guns, the states who had first adopted them, finally decided to dispense with them on European theaters of war. The further development of machine guns was not especially accelerated by the fact that the French _mitrailleuses_ had not fulfilled the expectations entertained for them during the Franco-German war, isolated cases excepted,[275] and that they were quickly silenced by the German artillery, which was equipped only with percussion shell, as soon as their position was ascertained. Thus, these guns seemed useful only in colonial wars and on board war ships for warding off torpedo boats. Although they took up very little room when in position, they were not considered useful for flank defense in fortresses, on account of the frequent breakdowns. In addition to their height, other defects developed; for example, they could obtain only a very insignificant rate of fire, betrayed their position by the powder smoke, and lacked the means for ascertaining ranges.