But, in accordance with the invariable tactics of the League, the first and most deadly assault was delivered from the air. The war-balloons stationed themselves above the fortifications on land, totally ignoring the presence of the fleet, and a few minutes after ten o'clock began to rain their deadly hail of explosives down upon them. Fifteen were placed over Dover Castle, and five over the fort on the Admiralty Pier, while the rest were distributed over the town and the forts on the hills above it. In an hour everything was in a state of the most horrible confusion. The town was on fire in a hundred places from the effects of the fire-shells. The Castle hill seemed as if it had been suddenly turned into a volcano; jets of bright flame kept leaping up from its summit and sides, followed by thunderous explosions and masses of earth and masonry hurled into the air, mingled with guns and fragments of human bodies. The end of the Admiralty Pier, with its huge blocks of stone wrenched asunder and pulverised by incessant explosions of dynamite and emmensite, collapsed and subsided into the sea, carrying fort, guns, and magazine with it; and all along the height of the Shakespeare cliff the earthworks had been blown up and scattered into dust, and a huge portion of the cliff itself had been blasted out and hurled down on to the beach. Meanwhile the victims of this terrible assault had, in the nature of the case, been able to do nothing but keep up a vertical fire, in the hope of piercing the gas envelopes of the balloons, and so bringing them to the earth. For more than an hour this fusilade produced no effect; but at length the concentrated fire of several Maxim and Nordenfelt guns, projecting a hail of missiles into the sky, brought about a result which was even more disastrous to the town than it was to its assailants. Four of the aerostats came within the zone swept by the bullets. Riddled through and through, their gas-holders collapsed, and their cars plunged downwards from a height of more than 5000 feet. A few seconds later four frightful explosions burst forth in different parts of the town, for the four cargoes exploded simultaneously as they struck the earth. The emmensite and dynamite tore whole streets of houses to fragments, and hurled them far and wide into the air, to fall back again on other parts of the town, and at the same time the fire-shells ignited, and set the ruins blazing like so many furnaces. No more shots were fired into the air after that.