Midsummer eve was a hot, sultry day. Towards evening dark heavy clouds rolled up against the wind, and a violent storm of thunder, lightning, and hail burst over the doomed city. The sentinels of Münster, exhausted by hunger, and alarmed at the rage of the elements, quitted their posts and retreated under shelter. The darkness, the growl of the wind, and the boom of the thunder concealed the approach of the Episcopal troops. The 400, under Steding, guided by the deserter, marched into the Königreich between ten and eleven o'clock, and met with no obstacles till they reached the Holy-cross Gate. Here they filled the ditch with faggots, trees, and bundles of straw; a bridge was improvised, the curtain of palisades masking the bastion was surmounted, ladders were planted, and without meeting with the least resistance, the 400 reached the summit of the walls. The sentinels, whom they found asleep, were killed, with the exception of one who purchased his life by giving up the pass-word, "Die Erde." The soldiers then advanced along the paved road which lay between the double walls, captured and killed the sentinels at every watch tower, and then, entering the streets, crossed the cemetery of Ueberwasser, the River Aa by its bridge, and debouched on the cathedral square, where the faint flashes of the retreating lightning illumined at intervals the gaunt scaffolding of the throne and gallery and pulpit of the Anabaptist king, looking now not unlike the preparations for an execution. The cathedral had been converted into the arsenal. Hansel led the Episcopal soldiers to the western gates, gave the word "Die Erde," and the guards were killed before they could give the alarm. The artillery was now in the hands of the 400.[263] [263] Kerssenbroeck, p. 176 _et seq._; and the authors before cited. The Anabaptists had slept through the rumble of the thunder, but suddenly the rattle of the drum on their hill of Zion woke them with a start. They sprang from their beds, armed in haste, and rushed to the cathedral square, where their own cannons opened on them their mouths of fire, and poured an iron shower down the main thoroughfares which led from the Minster green. But they were not discouraged. Through backways, and under the shelter of the surrounding houses, they reached the Chapel of St. Michael, which commanded the position of the Episcopal soldiers, and thence fired upon them with deadly precision. Steding turned the guns against the chapel, but its massive walls could not be broken through, and the balls bounded from them without effecting more than a trivial damage. The Anabaptists pursued their advantage. Whilst Steding was occupied with those who held the Chapel of St. Michael, a large number assembled in the market-place and marched in close ranks upon the cathedral square.