This fine feat was not a barren one: it was well worth the effort and loss which it must have cost. London could feed, recruit, and remount an army of even this magnitude with ease. The Tower was held by a royal garrison, but it could do nothing against so great a town.
From London, as though the name of the city had a sort of national authority, the Barons, who now felt themselves to be hardly rebels but almost co-equals in a civil war, issued letters of mandate to others of their class and to their inferiors. These letters were obeyed, not perhaps without some hesitation, but at any rate with a final obedience which turned the scale against the King. John was now in a very distinct inferiority, and even of his personal attendants a considerable number left the Court on learning of the defection of London. In all this long struggle nothing but the occupation of the capital had proved enough to make John feign a compromise. As excellent an intriguer as he was a fighter he asked nothing better than to hear once more the terms of the Barons.
He proceeded to Windsor, asked for a parley, issued a safeguard to the emissaries of the Barons, and despatched this document upon the 8th June, giving it a validity of three days. His enemies waited somewhat longer, perhaps in order to collect the more distant contingents, and named Runnymede—a pasture upon the right bank of the Thames just above Staines—as the place of meeting.
There are those who see in the derivation of the name "Runnymede" an ancient use of the meadow as a place of council. This is, of course, mere conjecture, but at any rate it was, at this season of the year, a large, dry field, in which a considerable force could encamp. The Barons marched along the old Roman military road, which is still the high-road to Staines from London, crossed the river, and encamped on Runnymede. Here the Charta was presented, and probably, though not certainly, signed and sealed. The local tradition ascribes the site of the actual signature to "Magna Charta" island—an eyot just up-stream from the field, now called Runnymede, but neither in tradition nor in recorded history can this detail be fixed with any exactitude. The Charta is given as from Runnymede upon the 15th June, and for the purpose of these pages what we have to note is that these two months of marching and fighting had ended upon the strategic point of Staines, and had clearly shown its relation to Windsor and to London.
In the short campaign that followed, during which John so very nearly recovered his power, the capital importance of Windsor reappears. Louis of France, to whom the Barons were willing to hand over what was left of order in England, had occupied all the south and west, including even Worcester, and, of course, London. In this occupation the exception of Dover, which the French were actively besieging, must be regarded as an isolated point, but Windsor, which John's men held against the allies, threw an angle of defence right down into the midst of the territory lost to the Crown. Windsor was, of course, besieged; but John's garrison, holding out as it did, saved the position. The King was at Wallingford at one moment during the siege; his proximity tempted the enemy to raise the siege, to leave Windsor in the hands of the royal garrison, and to advance against him, or rather to cut him off in his advance eastward. They marched with the utmost rapidity to Cambridge, but John was ahead of them: and before they could return to the capture of Windsor he was rapidly confirming his power in the north and the east.
It must not be forgotten in all this description that Windsor was helped in its development as a fortress by the presence to the south of the hill of a great space of waste lands.
These waste lands of Western Europe, which it was impossible or unprofitable to cultivate, were, by a sound political tradition, vested in the common authority, which was the Crown.
Indeed they still remain so vested in most European countries. The Cantons of Switzerland, the Communes and the National Governments of France, Italy, and Spain remain in possession of the waste. It is only with us that wealthy private owners have been permitted to rob the Commonwealth of so obvious an inheritance, a piece of theft which they have accomplished with complete cynicism, and by specific acts whose particular dates can be quoted, though historians are very naturally careful to leave the process but vaguely analysed. Indeed, the last and most valuable of these waste spaces, the New Forest itself, might have entirely disappeared had not Charles I. (the last king in England to attempt a repression of the landed class) so forcibly urged the local engrosser to disgorge as to compel him, with Hampden and the rest, to a burning zeal for political liberty.
This great waste space to the south of Windsor Hill became, after the Conquest, the Forest, and apart from the hunting which it afforded to the Royal palace, served a certain purpose on the military side as well.
To develop a thought which has already been touched on in these pages, mediæval fortification was dual in character: it had either a purely strategical object, in which case the site was chosen with an eye to its military value, whether inhabited or not, or the stronghold or fortification was made to develop an already existing town or site of importance. Of the second sort was Wallingford, but of the first sort, as we have seen, was Windsor. Indeed the distinction is normal to all fortification and exists upon the Continent to-day. For instance, the first-class fortress Paris is an example of the second sort, the first-class fortress Toul of the first. Again, all German fortresses, without exception, are of the second sort, while all Swiss fortification, what little of it exists, is of the first.