On the afternoon of Saturday Edward left London, and late in the evening of that day he reached Barnet. As the Yorkist army approached the town, the king's outriders, meeting those of the earl, chased them past the embattled tower of the church dedicated to St. John, and advanced till, through the darkness, they perceived the army of Warwick. On being informed that the earl was so near, the king ordered his army to move through Barnet, and encamped in the darkness, close to the foe, on Gladsmuir Heath. The king took up his quarters for the night in the town, and his soldiers lay on the heath. They had no sleep, however, for so near was the Lancastrian camp that the voices of men and the neighing of horses were distinctly heard. Both armies had artillery; and Warwick's guns were, during the night, fired perseveringly at the foe. The king, it appears, did not reply to this salutation. Indeed, Edward early discovered that the Lancastrians were unaware of the exact position of the Yorkist army, and thanked his stars that such was the case; for, though Edward's intention had been to place his men immediately in front of their foes, the darkness had prevented him from perceiving the extent of Warwick's lines, and thus it happened that, while ranging his forces so as far to outstride the earl's left wing, he had failed to place them over against the right. Seldom has an error in war proved so fortunate for a general. The earl happened to have all his artillery posted in the right division of his army, and concluded that the Yorkists were within reach. Edward, as the fire from Warwick's guns flashed red through the darkness, saw the advantage he had unintentionally gained, and issued strict orders that none of his guns should be fired, lest the enemy "should have guessed the ground, and so leveled their artillery to his annoyance." This precaution was successful, and the earl's gunners thundered till daybreak without producing any effect. Ere the first streak of day glimmered in the sky, the armies were in motion; and when the morning of Easter Sunday dawned, a flourish of trumpets and a solemn tolling from the bell of the Church of St. John aroused the inhabitants of Barnet, and announced that the game of carnage was about to begin. The weather was by no means favorable for that display of martial chivalry which, in sunshine, the field would have presented to the eyes of spectators. The morning was damp and dismal. A thick fog overshadowed the heath; and the mist hung so closely over both armies that neither Yorkists nor Lancastrians could see their foes, save at intervals. The fighting men of that age were as superstitious as their neighbors; and the soldiers on both sides concluded that the mists had been raised to favor the king by Friar Bungey, the potent magician whose spells were supposed to have raised the wind that kept Margaret of Anjou from the shores of England.