The Kaiser had ordered his troops to defend Tsing-tau as long as breath remained in their bodies. The feeble defence of Prince Henry Hill did not seem to show that they were disposed to hold out to the last man. During the next month General Kamio was inclined to think that their defence was largely make-believe, for they fired their shells in the most wanton and reckless fashion, sometimes discharging 1,000 to 1,500 projectiles a day. He therefore determined on a grand assault instead of a long, slow siege. From the sea a vigorous bombardment was kept up, and on 15th October the Japanese general offered a safe-conduct to all non-combatants who cared to leave the fortress. The American consul, several ladies and children, and a few Chinese took advantage of the offer. On 31st October, 140 Japanese siege guns were in position, and as it was the Emperor's birthday a royal salute was fired with live shells. Before, however, the guns were fired, the Japanese signalled, "Are you now quite ready, gentlemen?" The reply came in the shape of a whizzing bullet. Then the shells began to whistle. All the forts were bombarded; fires broke out near the harbour; the oil tanks were speedily in flames, and black smoke filled the heavens. The forts were assailed by guns of practically the same calibre as those with which the Belgian fortresses had been battered down. A British officer who witnessed the bombardment said, "It really was a wonderful sight, and the Japanese shooting was magnificent . . . . Every shell seemed to find the mark. There was hardly a stick left in the forts and redoubts; concrete platforms, trenches, guns, and barbed-wire entanglements, all were destroyed. Our small force did their full share." The German warships in the harbour replied, but before evening one of them had disappeared, and a second sank two days later. On 1st November H.M.S. _Triumph_, in seven shots, silenced the forts on Bismarck Hill; on 2nd November Fort Iltis was put out of action, and the Allies drove the Germans off a hill which they were holding. Next day the electric light station and the wireless station were wrecked; and, under heavy shell and rifle fire, the besiegers advanced still nearer to the fortress. By the night of the 6th the Germans were almost ready to surrender.