It would seem that it was not until the British victory at Cambrai, when 430 tanks were used to lead a large attack, in the course of which 8,000 prisoners and 100 guns were taken, that the German High Command realized that the use of tanks could no longer be postponed, for shortly thereafter the German Tank Corps was formed, an Antitank School of Instruction was established, and orders were placed for a large number of antitank rifles. The Germans experienced numerous manufacturing difficulties, however, in the construction of their tanks, and when Marshal Hindenburg inspected the first fifteen _panzerkraftwagens_, as they were called, at Charleroi, in March, 1918, he damned them with the faint praise: “They probably won’t be of much use, but since they are made we might as well employ them.” This discouraging send-off apparently had its effect, for the original of the _Elfriede_ type—_Elfriede_ herself—was ditched and captured near Villers-Brettoneux a few weeks later. By contriving to unite in this one model all the faults of the British and French tanks, the Germans once again proved the truth of the old saying: “Success has many imitators, but sometimes they copy only her defects.” According to a German deserter, the German Tank Corps in July, 1918, consisted of 25 German tanks and 50 repaired British machines. This same authority stated that 250 light tanks had been ordered for delivery in September, 1918, and that in April construction had been begun on a monster 38 feet long, weighing 110 tons, carrying four 77-mm. cannon and 13 machine-guns. This formidable war-engine, called a “_Fahrbarer Sefechtsunterstand: ver dunden mit Artillerie unt Infanterie Beebachtung_,” boasted contrivances for creating artificial mists (probably similar to our own smoke-producing devices), for laying and covering its own telephone-wires en route, was equipped with wireless, and carried a crew of an officer and twenty-eight men. If this supertank was ever constructed, it certainly never went into action.