The first stand of the enemy was made at Arcola, where a short, narrow bridge connects the high dikes which regulate the sluggish stream of the little river Alpon, a tributary of the Adige on its left bank. This bridge was defended by two battalions of Croatian recruits, whose commander, Colonel Brigido, had placed a pair of field-pieces so as to enfilade it. The French had been advancing in three columns by as many causeways, the central one of which led to the bridge. The first attempt to cross was repulsed by the deadly fire which the Croats poured in from their sheltered position. Augereau, with his picked corps, fared no better in a second charge led by himself bearing the standard; and, in a third disastrous rush, Bonaparte, who had caught up the standard and planted it on the bridge with his own hand, was himself swept back into a quagmire, where he would have perished but for a fourth return of the grenadiers, who drove back the pursuing Austrians, and pulled their commander from the swamp. Fired by his undaunted courage, the gallant lines were formed once more. At that moment another French corps passed over lower down by pontoons, and the Austrians becoming disorganized, in spite of the large reinforcements which had come up under Alvinczy, the last charge on the bridge was successful. With the capture of Arcola the French turned their enemy's rear, and cut off not only his artillery, but his reserves in the valley of the Brenta. The advantage, however, was completely destroyed by the masterly retreat of Alvinczy from his position at Caldiero, effected by other causeways and another bridge further north, which the French had not been able to secure in time.