Three miles from the Faubourg d’Isle, to which that general had now advanced, was a narrow pass or defile, between steep and closely hanging hills. While advancing through this ravine in the morning, the Constable had observed that the enemy might have it in their power to intercept his return at that point. He had therefore left the Rhinegrave, with his company of mounted carabineers, to guard the passage. Being ready to commence his retreat, he now sent forward the Due de Nevers, with four companies of cavalry to strengthen that important position, which he feared might be inadequately guarded. The act of caution came too late. This was the fatal point which the quick glance of Egmont had at once detected. As Nevers reached the spot, two thousand of the enemy’s cavalry rode through and occupied the narrow passage. Inflamed by mortification and despair, Nevers would have at once charged those troops, although outnumbering his own by nearly, four to one. His officers restrained him with difficulty, recalling to his memory the peremptory orders which he had received from the Constable to guard the passage, but on no account to hazard an engagement, until sustained by the body of the army. It was a case in which rashness would have been the best discretion. The headlong charge which the Duke had been about to make, might possibly have cleared the path and have extricated the army, provided the Constable had followed up the movement by a rapid advance upon his part. As it was, the passage was soon blocked up by freshly advancing bodies of Spanish and Flemish cavalry, while Nevers slowly and reluctantly fell back upon the Prince