As a natural result of this policy of tergiversation, the power and prestige of De-Nam increased considerably; and so great was his confidence in the ultimate success of the insurrection, that he established a strongly-fortified position at Cao-Thuong, in which he placed a garrison under the orders of De-Tam, the most trusted and capable of his lieutenants.
This subordinate not only administered the surrounding country, and levied toll in the name of his chief, but by night he often crossed the Song-Thuong and raided the rich villages around Phulang-Thuong, the inhabitants of which had been living in security and growing rich, thanks to the close proximity of the French troops garrisoned in that town. It was frequently the lot of the unhappy Resident to watch, through the night, from his verandah, the burning houses of these unfortunates.
Patrols would be sent out, but their departure was at once signalled, and they would arrive on the scene only to find that the raiders had decamped with their spoil; and sometimes these detachments, being at a disadvantage in the gathering darkness, would be ambuscaded by the rear-guard of the enemy, and suffer severe losses.
At last, something had to be done, and a column under General Godin was sent against the rebel position at Cao-Thuong. It was with some difficulty that the fort was located, owing to it being concealed in the midst of a dense thicket. Part of the expedition was surprised, and suffered losses. Eventually, thanks to the fire of half a battery of mountain guns, the position was evacuated, and the enemy, after breaking up into small groups, succeeded in escaping northwards. No dead or wounded Tonquinese were found in the fort, but its solid construction and the judicious selection of its site was cause for great surprise to all the officers present. There can be no doubt that in this, and also during the subsequent operations against Hou Thué, the French considerably underrated the strength and military capabilities of the enemy. It would not, however, be wise for us to criticise too severely, since we have committed similar errors in most of our own colonial expeditions.
A fine village close to the enemy's fort, was found to be abandoned, and was burned. With this the operations terminated, which fact demonstrates the ignorance of the French officials concerning the extent of the rising, for they now concluded, somewhat hastily, that the centre of resistance had been destroyed.
In reality the garrison of a small outpost only had been dislodged, and the enemy returned to the position as soon as the troops had gone. They did not, however, remain there long, for shortly afterwards the authorities constructed a strong fortification on the crest of a hill which overlooked all the surrounding country, and this was occupied by a detachment of native militia, under the orders of a French officer.
Elated with the knowledge that they had slain several French and native soldiers, the rebels most probably concluded that the victory had been theirs. Certain it is that for long afterwards every minstrel in the province sang of the prowess exhibited by De-Tam's troops on that day.
