Usually, over the floor, riddled like a colander, planks were laid, that on emergency could be turned up on their sides. I may add that the windows opening outwards are purposely so inartificially made that no one passing along the road underneath would suspect that there was a fortress above his head. He would certainly suppose that these holes were natural, such as are commonly found in the chalk cliffs. In fact the first time I visited Brantôme, and walked down the river to Bourdeilles, I passed this rock and entertained no suspicion that it contained anything remarkable, that it was as a matter of fact, a mere shell, with all the artificial work within.
Why was it that every city—nay, every little town—had to be not only walled about but to have its outposts? Because France was not a nation, only a congeries of individualities. As Michelet says of the fourteenth century: "The kingdom was powerless, dying, losing self-consciousness, prostrate as a corpse. Gangrene had set in, maggots swarmed, I mean the brigands, English and Navarese. All this rottenness isolated, detached the members of the poor body from one another. One talks of the Kingdom, but there were no States General, nothing at all general, no intercommunication, the roads were in the power of cut-throats. The fields were all battlefields, war was everywhere, and none could distinguish friend from foe."
How needful these outposts were may be judged from what Froissart says: "Rogues took advantage of such times (of truce), and robbed both towns and castles; so that some of them, becoming rich, constituted themselves captains of bands of thieves; there were among them those worth forty thousand crowns. Their method was to mark out particular towns or castles, a day or two's journey from each other; then they collected twenty or thirty robbers, and travelling through by-roads in the night-time, about daybreak entered the town or castle they had fixed upon, and set one of the houses on fire. When the inhabitants perceived it they thought it had been a body of soldiers sent to destroy them, and took to their heels as fast as they could" (Bk. i., c. 147).
Passing on from the outposts to towns, or defences to highways, we must glance at such as guard the approaches to countries, or such as Gibraltar that commands the great waterway between the Mediterranean and the Atlantic. Gibraltar is certainly the most complete and marvellous of all cliff castles. This is too well known to English travellers to need description here.
The French Gibraltar, Urdos, commands one of the passes through the Pyrenees. It is hewn out of the mountain in a buttress of rock, and rises in stages from the road to the height of 500 feet. Externally the mountain looks harmless enough. A cave opens here, and a rift there, and a few streaks of masonry may be noticed, but actually the mountain is riddled with galleries, batteries, and long flights of stairs, and hollowed out for ammunition and other stores; and it is capable of containing a garrison of three thousand men.
Faron also, 1660 feet high, with its magnificent precipices of salmon- coloured limestone, commanding both the harbour of Toulon and the Bay of Hyères, is capped with fortifications and pierced with batteries, casemates, and chambers for military stores, a position made by Nature and utilised with supreme skill. Nor must the chain of rock-forts of Campi delle Alte and of Mont Agel above Monaco, dominating the Corniche road be forgotten, ready to drop bombs amidst an army from Italy venturing along that splendid road, nor must Besançon be forgotten, occupying its inaccessible rock—inaccessible that is, to an enemy.
"Oppidum maximum Sequanorum," as Caesar described it in his day; "natura loci sic muniebatur ut magnam ad ducendum bellum daret facultatem."
Ehrenbreitstein faces the opening of the Moselle into the Rhine; and Frankenfeste holds the key of the Brennerpass; and Dover Castle commands the strait at its narrowest. Königstein crowning a precipitous rock 748 feet above the Elbe, though in Saxony is garrisoned by Prussians, guards the pass down the river from Bohemia; and Peterwardein is a rock-built fortress, that has been called the Ehrenbreitstein and Gibraltar of the Danube. What are these frontier fortresses but the same on an extensive scale as the Gué du Loir, the Roche Corail, and the Rochebrune? In the Middle Ages every city, every little town had to have its outposts and watch-tower on the look-out for the enemy, and to break the first impetus of an attack. But now it is not the town but the nation that has to gird itself about with frontier fortresses.