Colonel Canby had no intention of remaining inactive while the rebel leader was thus earnestly endeavoring to persuade the people into willing submission to Confederate power, or of permitting him by an apparent triumph to exercise his authority for the subversion of the legitimate government. He accordingly prepared for the important business of expelling him from the territory, determined to accomplish this, whatever effort it might involve. The rebels, on their way through the territory, followed the valley of the Rio Grande, and consequently would be obliged to pass Fort Craig. At this place Colonel Canby resolved to dispute their advance. His force was composed in part of United States regulars, and in part of New Mexican volunteers. With these he descended the river to meet the invaders. They were informed of his approach, and on the 19th crossed the river in order to take a position on the other side, from which they could shell the fort, and obtain command of the stream above it, by which movement they could cut off his communications. On the afternoon of the 19th, Colonel Canby ordered the detachments of the Fifth, Seventh and Tenth United States Infantry, under Captains Selden and Wingate, and Colonels Carson’s and Pino’s regiments of volunteers to cross the river and occupy an elevation opposite the fort, which would otherwise be appropriated by the rebels. On the afternoon of the 20th, Captain McRae’s battery and the cavalry under Major Duncan were ordered to cross the river, and were brought into position. The enemy were thus cut off from the river, and suffered from want of water. Their mules were so much exhausted that it was found necessary to double the teams in order to draw the wagons; but this resort at last failed, and the animals gave out entirely. The rebels finding the desperate strait to which they were reduced, opened a heavy cannonade upon the Federal troops. Being protected by the elevations between them and the enemy, the Union troops suffered no injury, except one man, who was wounded by a fragment from a ball, which struck a rock, and was shattered by the blow. The night closed on the antagonists. About two hundred mules were captured by the Union scouts, and a number of wagons burned.