But, however profound this change may have been, it affected but a small class, comparatively speaking. The whole number of military units, of knights due the king in service, seems to have been something less than five thousand.[3] For the great mass of the population, the working substratum, whose labours sustained the life of the nation, the Norman Conquest made but little change. The interior organization of the manor was not affected by it. Its work went on in the same way as before. There was a change of masters; there was a new set of ideas to interpret the old relationship; the upper grades of the manorial population suffered in some parts of England a serious depression. But in the main, as concerned the great mass of facts, there was no change of importance. Nor was there any, at first at least, which affected the position of the towns. The new system allowed as readily as the old the rights which they already possessed. In the end, the new ideas might be a serious matter for the towns in some particulars, but at present the conditions did not exist which were to raise these difficulties. At the time, to the mass of the nation, to everybody indeed, the Norman Conquest might easily seem but a change of sovereigns, a change of masters. It is because we can see the results of the changes which it really introduced that we are able to estimate their profound significance. The spoiling of England for the benefit of the foreigner did not consist in the confiscation of lands alone. Besides the forced redemption of their lands, William seems to have laid a heavy tax on the nation, and the churches and monasteries whose lands were free from confiscation seem to have suffered heavy losses of their gold and silver and precious stuffs. The royal treasure and Harold's possessions would pass into William's hands, and much confiscated and plundered wealth besides. These things he distributed with a free hand, especially to the churches of the continent whose prayers and blessings he unquestionably regarded as a strong reinforcement of his arms. Harold's rich banner of the fighting man went to Rome, and valuable gifts besides, and the Norman ecclesiastical world had abundant cause to return thanks to heaven for the successes which had attended the efforts of the Norman military arm. If William despatched these gifts to the continent before his own return to Normandy, they did not exhaust his booty, for the wonder and admiration of the duchy is plainly expressed at the richness and beauty of the spoils which he brought home with him.