Belgium and the Franco-Prussian War

The inadequacies which this revealed in Belgium's military and defensive preparations led to calls to reform the system of conscription and for a programme of fortification-building which would greatly influence the early phases of World War I.

[4] Indeed, in the early part of the war, French Marshal Canrobert brought an entire Army Corps (4 infantry divisions) to Châlons-sur-Marne in northern France as a reserve and to guard against any Prussian advance through Belgium.

[5] The decision outraged the other legionaries and the Legion's march, Le Boudin, makes repeated reference to the fact that the Belgians "[only] shoot from their rear-end" ("tireurs au cul") because of it.

The Catholics united with the Liberals under Walthère Frère-Orban to oppose them, and the reforms were finally defeated when d'Anethan's government fell during an unrelated scandal.

[7] Construction of a chain of forts along Belgium's borders was intensified, and led to a series of very modern fortifications, including the so-called "National redoubt" at Antwerp, at Liège and Namur, many of them designed by the great Belgian fortress architect, Henri Alexis Brialmont.

French troops approaching a small detachment of Belgian soldiers to seek internment in the aftermath of a nearby defeat, probably at the Battle of Sedan .
King Leopold II , shown in military uniform
Entry to the Fort d'Évegnée near Liège built in the 1880s, following the crisis of 1870–1871