Nevertheless, certain limitations are intruding, customs that have nearly the force of law.[68] For example, if a vassal attacks his suzerain, none but his own family (among his noble followers) can aid him. Also, in any case, at least a week's notice must be given ere the war is commenced. After the war does begin, forty days' respite must also be granted your foe's relatives ere attacking them. In the interval they are entitled to proclaim their neutrality and so to become safe. Again, one is supposed to respect priests and women and minors. Finally, if a truce is made the suzerain is bound to punish the violators. Such understandings rob warfare of part of its horrors, but do not prevent infinite blood and misery. As for that motive which prevails in other ages for waging wars--_patriotism_--often it does not seem to exist so vitally. Certainly Frenchmen ought to make a common front against Germans, Italians, English, etc., but lapses from this obligation are not always condemned as morally outrageous. Quite recently the Count of Boulogne, being at odds with King Philip, took money from both the King of England and the Emperor of Germany to raise up enemies against the King of France; and the count evidently felt that this was a proper measure against an obnoxious suzerain. The great significant tie is that of _personal loyalty_.[69] It is horrible to betray the prince to whom you have sworn fealty. A suzerain will call out his host by a summons to "my vassals," he will seldom think of appealing to "my fellow countrymen." [Sidenote: Few Battles and Little Strategy] We have said that wars are incessant; yet there is one strange thing about them--_pitched battles are very rare_. The campaigns abound in petty skirmishes--valorous duels, surprises of small castles, occasional clashes of cavalry, and, above all, in the pitiless ravaging of the lands, farms, and villages of the helpless peasantry. What better way to put pressure on your foe than to reduce his villeins to such misery that they can render him nothing in money or kind and that he thus be brought to poverty? If you have the weaker force you will not think of meeting an invader in battle. You will shut yourself up in your castles when you see the burning villages, stifle your pride, remain passive, and trust that after the "forty days' service" of your enemy's vassals is expired they will weary of the operations and not venture to besiege your strongholds. Then when the foe's army is beginning to disperse you can employ some neutral baron or abbot to negotiate peace. Even when kings are in the field, with really large armies, somehow the opposing forces seldom risk a decisive encounter. They maneuver, skirmish, and negotiate underhandedly with the uncertain elements in the hostile camp. The upshot often is that the invading army, having devoured all the provisions in the open country and not daring to besiege strong cities with a powerful enemy close at hand, retreats homeward.