townsfolk, the serfs rose and looted the country houses. In a way
quite different from Belgium, quite different from Alsace-Lorraine,
East Prussia is essential. Forces will and must be sent periodically
to defend that territory, however urgently they may be needed
elsewhere, as the pressure upon Germany increases. The German
commanders, if they forget East Prussia for a moment in the
consideration of the other essential points, will, the moment their
eyes are turned upon East Prussia again, remember with violent emotion
all that the province means to the reigning dynasty and its
supporters, and they will do anything rather than let that frontier
go. The memory of the first invasion is too acute, the terror of its
repetition too poignant, to permit its abandonment.

4. _Silesia._ Silesia, for quite other reasons (and remember that
these different reasons for defending such various points are the
essence of the embarrassment in which German strategy will find
itself), must be saved. It has been insisted over and over again in
these pages what Silesia means. Its meaning is twofold. If Silesia
goes, the safest, the most remote from the sea, the most independent
of imports of the German industrial regions, is gone. Silesia is,
again, the country of the great proprietors. Amuse yourselves by
remembering the names of Pless and of Lichnowsky. There are dozens of
others. But, most important of all, Silesia is what Belgium is not,
what Alsace-Lorraine is not, what East Prussia is not--it is the
strategic key. Who holds Silesia commands the twin divergent roads to
Berlin northwards, to Vienna southwards. Who holds Silesia holds the
Moravian Gate. Who holds Silesia turns the line of the Oder, and
passes behind the barrier fortresses which Germany has built upon her
Eastern front. Who holds Silesia strikes his wedge in between the
German-speaking north and the German-speaking south, and joins hands