The pros and cons of the use of railways for military purposes were, none the less, actively discussed in numerous pamphlets and treatises. Just as, in France, General Rumigny, adjutant to Louis-Philippe, had already foreshadowed the possibility of a sudden invasion by a German army reaching the frontier by rail, so, also, in Germany, in the words of one writer at this period, "anxious spirits shudder at the thought that, some fine spring morning, a hundred thousand Frenchmen, thirsting for war, will suddenly invade our peaceful valleys at bird-like speed, thanks to the new means of locomotion, and begin their old game (das alte Spiel) over again." On the other hand there were military sceptics—such as the author of a pamphlet "Uber die Militärische Benutzung der Eisenbahnen" (Berlin, 1836)—who, basing their calculations on locomotive performances up to that date, asserted that, although the railway might be of service in the conveyance of supplies, guns and ammunition, it would be of no advantage in the transport of troops. These, they declared, would get to their destination sooner if they marched.[1]

The most noticeable of the various publications issued in Germany at this period was a book by Carl Eduard Pönitz ("Pz."), which appeared at Adorf, Saxony, in 1842, under the title of "Die Eisenbahnen als militärische Operationslinien betrachtet, und durch Beispiele erlaütert." The writer of this remarkable book (of which a second edition was issued in 1853) gave a comprehensive survey of the whole situation in regard to railways and war, so far as the subject could be dealt with in the light of railway developments and of actual experiences of troop movements by rail down to that time; and he argued strongly in favour of the advantages to be derived from the employment of railways for military purposes. He even suggested that, in the event of an inadequate supply of locomotives, or of operations having to be conducted in a mountainous country where locomotives could not be used for heavy traffic, the troops might still use their own horses to draw the coaches and wagons along the railway lines, so that the men would arrive fresh and fit for immediate fighting at the end of their journey.

Describing railways as the most powerful vehicle for the advancement of "Kultur" since the invention of printing, Pönitz showed how Belgium and Saxony were the two countries which had taken the initiative in railway construction on the Continent of Europe; and his references to the former country are especially deserving of being recalled, in view of recent events. He pointed to the good example which had been set by the "far-sighted and energetic" King of the Belgians, and continued:—

Although, in a land torn asunder by revolutionary factions, many wounds were still bleeding; and although the newly-created kingdom was threatened by foes within and without and could organise means of resistance only with great difficulty, there was, nevertheless, taken in hand a scheme for the construction of a network of railways designed to extend over the entire country, while at the present moment the greater part of that scheme has, in fact, been carried out. In this way King Leopold has raised up for himself a memorial the full value and significance of which may, perhaps, be appreciated only by generations yet to come.

While Belgium was thus shown to have been setting a good example, the only railways which Prussia then had in actual operation (apart from the Berlin-Stettin and the Berlin-Breslau lines, which had been begun, and others which had been projected) were the Berlin-Potsdam and the Berlin-Magdeburg-Leipzig lines; though Saxony had the Leipzig-Dresden line, and Bavaria the Nüremberg-Fürth and the Munich-Augsburg lines. Pönitz, however, excused the backwardness of Prussia on the ground that if her Government had refused, for a long time, to sanction various projected railways, or had imposed heavy obligations in regard to them, such action was due, not to prejudice, but to "a wise foresight"—meaning, presumably, that Prussia was waiting to profit by the experience that other countries were gaining at their own cost.

Having dealt with all the arguments he could advance in favour of the general principle of employing railways for military purposes, Pönitz proceeded to elaborate a scheme for the construction of a network of strategical lines serving the whole of Germany, though intended, more especially, to protect her frontiers against attack by either France or Russia. Without, he said, being in the secrets of international politics, he thought he might safely presume that Germany's only fear of attack was from one of these two directions; and, although the relations of the Great Powers of Europe were then peaceful, a continuance of those conditions could not, of course, be guaranteed. So, he proceeded—

We have to look to these two fronts; and, if we want to avoid the risk of heavy losses at the outset, we needs must—also at the outset—be prepared to meet the enemy there with an overwhelming force. Every one knows that the strength of an army is multiplied by movements which are rapid in themselves and allow of the troops arriving at the end of their journey without fatigue.

In a powerful appeal—based on motives alike of patriotism, of national defence and of economic advantage—that his fellow-countrymen should support the scheme he thus put forward, Pönitz once more pointed to Belgium, saying:—