Bradley, with between 400 and 500 men in three ships, was sent ahead by Morgan to the isthmus to seize the Castle of San Lorenzo, situated at the mouth of the Chagre river. The President of Panama, meanwhile, on 15th December, had received a messenger from the governor of Cartagena with news of the coming of the English.[295] The president immediately dispatched reinforcements to the Castle of Chagre, which arrived fifteen days before the buccaneers and raised its strength to over 350 men. Two hundred men were sent to Porto Bello, and 500 more were stationed at Venta Cruz and in ambuscades along the Chagre river to oppose the advance of the English. The president himself rose from a bed of sickness to head a reserve of 800, but most of his men were raw recruits without a professional soldier amongst them. This militia in a few days became so panic-stricken that one-third deserted in a night, and the president was compelled to retire to Panama. There the Spaniards managed to load some of the treasure upon two or three ships lying in the roadstead; and the nuns and most of the citizens of importance also embarked with their wives, children and personal property.[296] The fort or castle of San Lorenzo, which stood on a hill commanding the river Chagre, seems to have been built of double rows of wooden palisades, the space between being filled with earth; and it was protected by a ditch 12 feet deep and by several smaller batteries nearer the water's edge. Lieutenant-Colonel Bradley, who, according to Exquemelin, had been on these coasts before with Captain Mansfield, landed near the fort on the 27th of December. He and his men fought in the trenches from early afternoon till eight o'clock next morning, when they stormed and carried the place. The buccaneers suffered severely, losing about 150 in killed and wounded, including Bradley himself who died ten days later. Exquemelin gives a very vivid account of the action. The buccaneers, he writes, "came to anchor in a small port, at the distance of a league more or less from the castle. The next morning very early they went on shore, and marched through the woods, to attack the castle on that side. This march continued until two o'clock, afternoon, by reason of the difficulties of the way, and its mire and dirt. And although their guides served them exactly, notwithstanding they came so nigh the castle at first that they lost many of their men with the shot from the guns, they being in an open place where nothing could cover nor defend them. This much perplexed the Pirates ..." (but) "at last after many doubts and disputes among themselves they resolved to hazard the assault and their lives after a most desperate manner. Thus they advanced towards the castle, with their swords in one hand and fireballs in the other. The Spaniards defended themselves very briskly, ceasing not to fire at them with their great guns and muskets continually crying withal: 'Come on, ye English dogs, enemies to God and