Both batteries were now cutting down the Mexicans at the foot of the mountain, but Breakstone, cool as always, pointed to the columns of Ampudia's infantry, which were still pressing hard on the flank, seeking to reach the rear of the American army.

"If they get there we are lost," he said.

"There is dust behind us now," exclaimed Phil. "See that column of it coming fast!"

"Good God, can they have got there already!" cried Breakstone, despair breaking at last through his armor of courage.

The cloud of dust rose like a tower and came fast. Then a shout of joy burst from the Americans. Through that cloud of dust showed the red face and white hair of Old Rough and Ready, their commander, returning from Saltillo, and with him were Davis's Mississippians and May's mounted men. Wool galloped forward to meet his chief, who rode upon the plateau and looked at the whole wide curve of the battle as much as the dust and smoke would allow.

"The battle is lost," said Wool.

"That is for me to say," said Taylor.

Yet it seemed that Wool, a brave and resolute leader, was right. A great percentage of the American army was already killed or wounded. Many of its best officers had fallen, and everywhere the Mexicans continually pressed forward in columns that grew heavier and heavier. Santa Anna worthily proved that day that, whatever he may have been otherwise he possessed devouring energy, great courage, and a spark of military genius. And the generals around him, Lombardini, Pacheco, Villamil, Torrejon, Ampudia, Minon, Juvera, Andrade, and the rest were full of the Latin fire which has triumphed more than once over the cold courage and order of the North.

The crisis was visible to every one. Ampudia and his infantry passing to the rear of the American army must be stopped. Davis gathered his Mississippians and hurled them upon Ampudia's men, who outnumbered them five to one. They fired, then rushed down one slope of a ravine that separated them from the enemy, and up the other slope directly into the ranks of the Mexicans; firing another volley almost face to face. So great was their impact that the head of the Mexican column was shattered, and the whole of it was driven back. Ampudia's men, by regiments, sought shelter along the slopes of the mountain.

The battle was saved for the moment, but for the moment only. Few battles have swung in the balance oftener than this combat at Buena Vista, when it seemed as if the weight of a hair might decide it.