SEPTEMBER, 1572 It lacked two hours before the dawn on this sultry night early in September. The crescent moon had long ago sunk behind a bank of clouds in the west, and not a sound stirred the low-lying land around the besieged city. To the south the bivouac fires of Alva's camp had died out one by one, and here the measured tread of the sentinels on their beat alone broke the silence of the night. To the north, where valorous Orange with a handful of men--undisciplined, unpaid and rebellious--vainly tried to provoke his powerful foe into a pitched battle, relying on God for the result, there was greater silence still. The sentinels--wearied and indifferent--had dropped to sleep at their post: the troops, already mutinous, only held to their duty by the powerful personality of the Prince, slept as soundly as total indifference to the cause for which they were paid to fight could possibly allow. In his tent even Orange--tired out with ceaseless watching--had gone to rest. His guards were in a profound sleep