Notwithstanding that the pass through which the prisoners and their escort were now advancing was nearly a mile in length, and in many places admirably adapted for a surprise, the officer in command, either through ignorance or over-confidence, neglected the usual precaution of sending scouts along the hills that on either side commanded the road. This negligence struck Herrera, who knew by experience, that, with such active and wily foes as the Carlists, no precaution could be dispensed with, however superfluous it might seem. Scarcely had the troops entered the defile when he suggested to the major the propriety of sending out skirmishers to beat the thickets and guard against an ambuscade.
"Quite unnecessary, sir," was the reply. "There is no rebel force in this part of the country that would venture to come within a league of us."
"So we are told," said Herrera; "but I have had occasion to see that one must not always rely on such assurances."
"I shall do so, nevertheless, in this instance," said the major. "We have a long march before us, and if I fag the men by sending them clambering over hills and rocks, I shall lose half of them by straggling, and perhaps not reach Pampeluna to-night."
"If you will allow me," said Herrera, "I will send a few of my dragoons to do the duty. They will hardly be so effective as infantry for such a service, but it will be better than leaving our flanks entirely unguarded."
"I have already told you, sir," replied the major testily, "that I consider such precaution overstrained and unnecessary. I believe, Lieutenant Herrera, that it is I who command this detachment."
Thus rebuked, Herrera desisted from his remonstrances, and fell back into his place. The march continued in all security through the wild and dangerous defile; the men, refreshed by their momentary halt, tramping briskly along, chattering, smoking, and singing snatches of soldier's songs. It appeared as if the negligence of the major was likely to be justified, as far as it could be, by the result; for they were now within two hundred yards of the extremity of the pass, and in view of the open country. The defile
was each moment widening, and the space between the road and the hills was filled up with a wood of young beech and oak. Herrera himself, who had each moment been expecting to receive a volley from some ambushed foe, was beginning to think the danger over, when a man dressed in red uniform, with a scarlet cap upon his head, and mounted on a white horse, suddenly appeared at the end of the pass, and tossing his lance, which he carried at the trail, into his bridle hand, put a trumpet that was slung round his neck, to his mouth, and blew a loud and startling blast. The signal, for such it was, did not long remain unanswered. A hoarse wild shout issued from the wood on either side of the road, and a volley of musketry resounded through the pass. In an instant the hills were alive with Carlist soldiers, some reloading the muskets they had just fired, others taking aim at the Christinos, or fixing their bayonets in preparation for a closer encounter. Another minute had scarcely elapsed, when a strong squadron of cavalry, which the trumpeter had preceded, dashed out of the fields at the extremity of the pass, formed column upon the road, and levelling their long light lances, advanced, led on by Zumalacarregui himself, to charge the astonished Christinos.
Extreme was the confusion into which the escort was thrown by this attack, so totally unexpected by every body but Herrera. All was bewilderment and terror; the men stood staring at each other, or at their dead and wounded comrades, without even thinking of defending themselves. This state of stupefaction lasted, however, but a second; and then the soldiers, without waiting for orders, turned back to back, and facing the points where the Carlists had stationed themselves, returned their fire with all the vigour and promptness which desperation could give. The major—a really brave man, but quite unequal to an emergency of this nature—knew not what orders to give, or how to extricate himself and his men from the scrape into which his own headstrong imprudence had brought them. Foreseeing no possibility of escape from an enemy who, in numbers and advantage of position, so far overmatched him, his next thought regarded the prisoners, and he galloped hastily back to where they stood. The Carlists had probably received orders concerning them; for neither they nor their immediate escort had suffered injury from the volley that had played such havoc with the main body of the detachment.
"Fire on the prisoners!" shouted the major.