Universal military service had been compulsory in Prussia since 1813; but the organisation of territorial army corps now received fuller development, so that each part of Prussia, including, too, most of the North German Confederation, had its own small army complete in all arms, and reinforced from the Reserve, and, at need, from the Landwehr[35].

By virtue of the military conventions of 1866, the other German States adopted a similar system, save that while Prussians served for three years (with few exceptions in the case of successful examinees), the South Germans served with the colours for a shorter period.

Those conventions also secured uniformity, or harmony, in the railway arrangements for the transport of troops.
[Footnote 35: By the Prussian law of November 9, 1867, soldiers had to serve three years with the colours, four in the reserve, and five in the Landwehr.

Three new army corps (9th, 10th, and 11th) were formed in the newly annexed or confederated lands, Hanover, Hesse-Cassel, Saxony, etc.
(Maurice, _The Franco-German War_, 1900).] The General Staff of the North German Army had used these advantages to the utmost, by preparing a most complete plan of mobilisation--so complete, in fact, that the myriad orders had only to be drawn from their pigeon-holes and dated in the last hours of July 15.

Forthwith the whole of the vast machinery started in swift but smooth working.
Reservists speedily appeared at their regimental depots, there found their equipment, and speedily brought their regiments up to the war footing; trains were ready, timed according to an elaborate plan, to carry them Rhinewards; provisions and stores were sent forward, _ohne Hast, ohne Rast_, as the Germans say; and so perfect were the plans on rail, river, and road, that none of those blocks occurred which frequently upset the plans of the French.